44results about How to "High speed rotation" patented technology

The invention relates to the technical field of transportation equipment, in particular to artificial stone conveying equipment which comprises a rubber conveying belt, and conveying belt baffles are fixedly connected to the two sides of the rubber conveying belt; the rubber conveying belt is used for conveying artificial stones; five sets of fixing frames are fixedly connected to the bottoms of the inner walls of one set of conveying belt baffles. A power mechanism is fixedly connected to one side of the other conveying belt baffle. The inner wall of each fixing frame is rotationally connected with a driving rotating shaft. The artificial stone is placed on the rubber conveying belt, then the power motor is started, the rubber conveying belt conveys the artificial stone, due to the fact that the rubber conveying belt is made of rubber, the rubber conveying belt is bent due to the gravity of the artificial stone in the transmission process, and due to the fact that the second group and the fourth group of bearings are cross-shaped, the rubber conveying belt is bent. When the rubber conveying belt makes contact with the two sets of bearings, the rubber conveying belt can be repeatedly jacked up, the artificial stone is shaken, and impurities on the artificial stone can be shaken off due to inertia after shaking.

The present invention provides an electric motor capable of high-speed rotation. The electric motor (10) comprises: a shaft (2); at least two bearings, namely a bearing (4a) and a bearing (4b), which are used to support the shaft (2); a magnet (3) which is supported by the shaft (2) between the two bearings (4a) and the bearing (4b); a stator (5) which surrounds the magnet (3); and a magnetic component (6a) and a magnetic component (6b) which are arranged between the magnet (3) and the bearings (4a) and the bearings (4b) in the length direction of the shaft (2), and the magnetic component (6a) and the magnetic component (6b) have an outer diameter larger than the outer diameter of the magnet (3).

The utility model discloses a subway energy-saving fan which comprises a fan body, protective net pieces are arranged on the left side and the right side of the fan body, a rotating shaft is connected between the protective net pieces on the left side and the right side in a rotating fit mode, and two sets of fans which are correspondingly arranged on the left side and the right side are fixedly arranged on the rotating shaft in the circumferential direction. A first transmission wheel and a second transmission wheel are further fixedly arranged on the rotating shaft, a driving mechanism is mounted at the bottom of the fan body and comprises a shell, a mounting plate is fixedly arranged in the shell, a moving table is arranged on the left side of the mounting plate, and a driving motor is fixedly arranged in the moving table; an electric control telescopic controller used for controlling the moving table to move left and right is fixedly arranged in the mounting plate. The device can control the rotation speed adjustment of the fan, so that the service life is prolonged while energy is saved; spray can be diffused and sprayed out at a high speed, and the safety in the tunnel is further improved.

The cutter replacing and grinding device comprises a main shell, the outer surface of the main shell is rotationally connected with a transmission shaft, the outer surface of the transmission shaft is rotationally connected with a belt, the inner surface of the belt is rotationally connected with a cutter grinding table, and the output end of a motor is rotationally connected with a conveying belt. The utility model relates to the technical field of cutter replacing and grinding devices, the angle table is arranged, when the device is used, the angle table can rotate to change the angle, after the angle table is rotated, the angle table can be fixed through the pressing plate and the locking nut which are arranged on the sliding table, and four cutting discs can be ground at the same time. And meanwhile, a lead screw is arranged below the angle table, the angle table can be driven to move front and back only by rotating the lead screw during grinding, and the device achieves the purpose of replacing and grinding the cutter of the circle shear.

The utility model discloses an energy-saving and environment-friendly washing and dewatering machine which comprises a washing and dewatering machine body, a damping supporting assembly, an inner container assembly and a filtering assembly. The shock absorption supporting assembly comprises a supporting transverse plate and a supporting vertical plate, the supporting transverse plate is connected with a transverse shock absorber and a longitudinal shock absorber, the inner container assembly comprises a shell and an inner container which are arranged on the supporting vertical plate, the filtering assembly comprises a filtering cylinder, a longitudinal filtering pipe is arranged in the filtering cylinder, and the longitudinal filtering pipe is connected with the shell. By arranging the transverse shock absorbers and the longitudinal shock absorbers in the washing and dehydrating machine, shock absorption of the shell in multiple directions is achieved, the shock absorption effect is improved, by arranging the filter cartridge and arranging the longitudinal filter pipes in the filter cartridge, elution waste liquid is treated and then discharged, pollution to the external environment is reduced, and the environment protection effect is achieved; by arranging the telescopic rod to move, the bayonet socket is clamped with the end part of the rotating shaft, high-speed rotation of the longitudinal filtering pipe is realized, and the filtering efficiency is improved.

The invention relates to a high-speed rotating feeding and discharging device which comprises a base, the high-speed rotating feeding and discharging device comprises a first driving source fixedly arranged on the base and used for providing a power source, and the first driving source is provided with at least three detection assemblies used for comparing and detecting the rotating angle; the grabbing mechanism is arranged on the top of the first driving source in a lifting mode, and the first driving source can drive the grabbing mechanism to rotate in a stepping mode; and the flexible transmission mechanism is arranged between the first driving source and the grabbing mechanism, and the flexible transmission mechanism cuts off power transmission between the first driving source and the grabbing mechanism under the action of an electric field. The high-speed rotating feeding and discharging device has the advantages of being simple in structure, flexible to operate, efficient, safe and the like, is suitable for various industrial automatic production lines, and has wide application prospects.

The invention relates to the technical field of object fluid equipment, and discloses a molecular pump heat dissipation structure and a molecular pump heat dissipation system.The molecular pump heat dissipation structure comprises a shell, a bearing seat, a sealing assembly and a heat dissipation air channel. The shell is provided with a hollow inner cavity. And the bearing seat is connected with the shell. The sealing assembly is arranged between the inner wall of the shell and the bearing seat, and the hollow inner cavity is divided into a motor cavity and a bearing cavity with the interior being vacuum. The heat dissipation air channel penetrates through the shell, and the two opposite sides of the motor cavity communicate with the heat dissipation air channel through the air inlet and the air outlet correspondingly. Therefore, the heat of the hollow inner cavity can be greatly reduced, the heat dissipation efficiency is improved, the working efficiency of the motor is improved, and the service life of the motor is prolonged.

This utility model discloses a V-blade semi-circular horizontal turbine casing, belonging to the field of hydropower generation. It includes a semi-circular casing, a base tailrace tank, and a V-blade lever runner. The V-blade lever runner includes a runner disc with a lever effect and several V-shaped blades. Compared with the prior art, the shape of the semi-circular casing in this application is adapted to the runner disc for mounting nozzles, which can shorten the distance between the nozzles and the runner disc, reducing water flow loss at the nozzles. The V-shaped blades have "V"-shaped openings, which can both catch the water flow ejected from the nozzles, improving water flow utilization, and reduce airflow friction resistance generated during high-speed rotation using the "V"-shaped tips, thereby reducing energy loss and improving energy utilization. When the V-shaped blades rotate to the bottom of the runner disc, they can also unload water, reducing the load on the runner disc, giving the runner disc a lever effect, and improving the turbine's power generation efficiency.

The utility model discloses a rolling support structure of a fan with an oil bearing structure, which comprises a mounting bottom plate, a rolling support mechanism is mounted on the inner side of the middle of the mounting bottom plate, the rolling support mechanism comprises a bearing sleeve, the bearing sleeve is fixedly connected with the mounting bottom plate, a plurality of limit grooves are arranged on the inner wall of the bearing sleeve, and the limit grooves are fixedly connected with the mounting bottom plate. The inner side of the limiting groove is provided with anti-deviation strips, the inner sides of the multiple anti-deviation strips are provided with an oil-retaining bearing body, the bottom end of the oil-retaining bearing body is provided with a clamping gasket, and the upper end face of the oil-retaining bearing body is provided with an oil seal gasket; a rotating shaft is rotationally connected to the inner side of the oil bearing body, an iron core winding is fixedly installed on the outer side of the upper end of the bearing sleeve, and a magnetic ring is rotationally connected to the outer side of the iron core winding. The oil film gap is formed between the oil bearing and the fan rotating shaft, friction is effectively avoided through oil film connection in the gap, the rotating speed of the fan can be increased, and the service life of the oil bearing can be prolonged.

The utility model relates to the technical field of cam shaft machining, in particular to an oil pump cam shaft machining tool which comprises a bottom plate, a first limiting seat fixedly installed on one side of the upper surface of the bottom plate, a second limiting seat movably installed on the other side of the upper surface of the bottom plate, a first adjusting seat and a second adjusting seat. The first adjusting seat is slidably mounted on the inner side of the first limiting seat; a first bayonet socket is fixedly mounted on one side, close to the second limiting seat, of the first adjusting seat; the second adjusting seat is slidably mounted on the inner side of the second limiting seat; wherein a reserved groove is formed in the second adjusting seat; a second bayonet socket is rotationally mounted in the reserved groove; a cam shaft body is connected to the opposite sides of the first bayonet socket and the second bayonet socket in an inserted mode. The cam shaft machining tool solves the problem that a machining tool used at the present stage is low in efficiency when clamping and positioning a cam shaft.

The invention relates to the technical field of molecular sieve manufacturing, and discloses a molecular sieve raw material powder batching device, comprising a batching bin and a feeding platform, wherein the feeding platform is connected to the top of the batching bin, a plurality of feeding pipes connected to the batching bin are arranged on the feeding platform, a mixing mechanism for uniformly stirring materials is arranged in the batching bin, the mixing mechanism comprises a driving mechanism and a plurality of stirring columns, the driving mechanism drives the stirring columns to rotate so that the materials are uniformly mixed, a discharging mechanism is arranged at the bottom of the batching bin, and the device realizes the functions of variable stirring and deposited material turning, the revolution and rotation of the stirring columns are realized through the structural design of the driving mechanism, the stirring efficiency is improved, the angle adjustment of the stirring paddle is realized through the cooperation of the stirring paddle mechanism and the adjusting column, and then the periodic change of the material mixing flow direction is realized, and the mixing efficiency is improved.

The utility model relates to the field of medical apparatus and instruments, disclose a eccentric cutter, including base, first eccentric support seat, outer tube, second eccentric support seat, support inner tube, cutter head subassembly and suction passage, first eccentric support seat is installed to base, one end of outer tube is installed to first eccentric support seat, second eccentric support seat is installed to the one end of outer tube away from first eccentric support seat, and second eccentric support seat has gourd shape through -hole, support inner tube penetrates outer tube, one end is installed to first eccentric support seat, and the other end is installed to the support portion of gourd shape through -hole, cutter head subassembly includes cutter head part and transmission shaft, transmission shaft penetrates support inner tube, and rotatably is installed in support inner tube, the utility model separates cutter head subassembly and suction passage completely, on one hand makes cutter head part can high -speed rotation, promotes the operation efficiency, on the other hand can also strengthen the stability of cutter whole, promotes the security of operation.

The invention discloses a six-groove magnetizing type 90-degree built-in capacitor brush motor, which relates to the field of motor design and comprises a motor bottom cover, a rotor and a motor shell. Two carbon brush installation positions are formed on the inner side of the motor bottom cover, motor carbon brushes are fixedly installed in the carbon brush installation positions, a commutator is fixedly installed on the rotor, and the motor carbon brushes abut against the outer side of the commutator to achieve electrical connection. A slot is formed between the carbon brush mounting position and the motor bottom cover, a capacitor is mounted in the slot in a clearance fit manner, the inner end of the capacitor is electrically connected to the motor carbon brush, and the outer end of the capacitor extends out of the motor bottom cover and is electrically connected to the motor shell; a magnetizing ring is fixedly arranged in the motor shell, the magnetizing ring is divided into a plurality of magnetic poles after being magnetized, and S poles and N poles in the magnetic poles are arranged in a staggered manner; according to the invention, the assembly of the brush motor can be facilitated, the rotation precision and stability of the rotor of the brush motor can be improved, the capacitor can be rapidly replaced, and the noise of the brush motor during working can be reduced.

The utility model discloses a handheld portable acupuncture device which comprises a main shell, a power source is arranged in the main shell, an auxiliary shell is detachably arranged on the lower portion of the main shell, a transmission piece is arranged in the auxiliary shell, and a locking mechanism used for clamping an acupuncture needle is arranged on the lower portion of the auxiliary shell. The power source is connected with the locking mechanism through a transmission piece; the main shell is provided with a shifting piece used for controlling the on-off state of the power source. The whole electric drill is composed of three parts, different filiform needles can be replaced according to different operation requirements, the filiform needles can be driven to rotate at a high speed to drill into hard bone layers and bone holes by holding the main shell and shifting the shifting piece with fingers to start the power source when the electric drill is used, the electric drill can drill forwards and backwards, and the electric drill is convenient to use and saves more labor.

The utility model relates to the technical field of cable extruders, in particular to a quick feeding cable extruder which comprises an extruder body, a screw conveyor, a feeding cylinder, a crushing mechanism, an anti-bridging mechanism and a feeding bin, the screw conveyor is arranged on the extruder body and communicated with the extruder body, the feeding cylinder is arranged on the screw conveyor, and the crushing mechanism is arranged on the feeding cylinder. The feeding barrel is communicated with the spiral conveyor, the crushing mechanism is arranged in the feeding barrel and used for crushing raw materials in the feeding barrel, the bridging prevention mechanism is arranged in the feeding barrel and used for preventing the raw materials in the feeding barrel from bridging, the feeding bin is arranged on one side of the feeding barrel, and a feeding pipe is arranged between the feeding bin and the feeding barrel; and meanwhile, the stirring mechanism is arranged, so that blockage and bridging of the raw materials in the feeding barrel are avoided, and the problems that in the prior art, the melting rates of the raw materials are not consistent, and the bridging phenomenon of the raw materials in the hopper is likely to happen are solved.

The utility model discloses a novel polishing device in the technical field of polishing, which comprises a mounting shell, a polishing mechanism and an auxiliary mechanism are arranged on the inner side of the mounting shell, the auxiliary mechanism comprises a driving motor, a transmission rod, a mounting groove and a polishing rod, the transmission rod is fixedly mounted at the transmission end of the driving motor, the mounting groove is formed in the transmission rod, and the polishing rod is fixedly mounted in the mounting groove. The grinding machining device is composed of an installation shell, a grinding mechanism and an auxiliary mechanism, the grinding mechanism adopts a large-area grinding ring as a grinding part and can grind objects, especially materials such as wood long plates, but the objects have areas difficult to grind, especially areas such as thin grooves and water corner gaps. And an auxiliary mechanism can be used for processing the partial area, and a small and exquisite grinding rod is used for grinding, so that the multi-type grinding effect is achieved, and objects of various specifications can be ground.

The high-speed centrifugal machine for food production and processing relates to the technical field of centrifugal machines and comprises a centrifugal box, a top plate is arranged at the top of the centrifugal box, a centrifugal barrel is mounted at the bottom of the top plate, filter holes are formed in the surface of the centrifugal barrel at equal intervals, a disc is slidably mounted in the centrifugal barrel, and the upper end and the lower end of the centrifugal barrel are open; compared with the prior art, the centrifugal barrel can be pulled out of the centrifugal box and turned over through the connecting assembly, the two ends of the centrifugal barrel can serve as feeding ports, the space is divided through an internal disc, after cleaning is completed every time, the used end is turned over downwards, and new food raw materials are added into the unused end; the disc descends under the action of gravity, the inner wall of the centrifugal barrel is cleaned, disintegrating slag and impurities are discharged from the bottom, the bottom of the centrifugal barrel is cleaned through the sealing cleaning assembly, the used part is cleaned according to the feeding time, the overall time needed to be consumed is saved, and efficiency is improved.

The embodiment of the invention provides a rotary cutting type pipe cutting machine, and relates to the technical field of pipe cutting machines. The rotary cutting type pipe cutting machine comprises a machine body, a pipe rotating mechanism and a pipe cutting mechanism. The pipe rotating mechanism and the pipe cutting mechanism are both connected with the machine body. The pipe cutting mechanism comprises a fixing plate, a first driving assembly and a clamping assembly. The clamping assembly is rotationally connected with the fixing plate, the first driving assembly is installed on the machine body, the first driving assembly is connected with the clamping assembly and used for driving the clamping assembly to rotate, the clamping assembly is used for clamping a pipe body, and the pipe cutting mechanism is used for cutting the pipe body. According to the pipe cutting device, the structure that the pipe rotating mechanism and the pipe cutting mechanism are combined is arranged, the pipe rotating mechanism adopts the clamping assembly to stably clamp the pipe body, rotation of the pipe body is achieved through the first driving assembly, and the problem that an existing fixed pipe body cutting mode is low in efficiency is solved.

The invention relates to the technical field of lifting equipment, in particular to modular jacking equipment for a magnetic adsorption robot and a using method.The modular jacking equipment comprises a jacking device body, a jacking assembly and a driving assembly.The jacking device body comprises an upper shell and a lower shell which are connected in a nested mode; the upper shell is matched with the lower shell to form a shell inner cavity for mounting the jacking assembly and the driving assembly, the jacking assembly is mounted on one side of the interior of the shell inner cavity, and the jacking assembly comprises a transmission rod mounted on one side of the interior of the shell inner cavity, a driven gear mounted on the upper portion of the transmission rod and a sliding sleeve arranged in the middle of the transmission rod in a sleeving mode; and the jacking sleeve is arranged on the lower portion of the transmission rod in a sleeving mode, the driving assembly is installed on the other side of the interior of the cavity in the shell, and the driving assembly is meshed with the driven gear to provide rotation power for the driven gear.

The utility model relates to the field of heat treatment equipment. A high-rotating-speed long-shaft impeller structure for medium stirring comprises a holder, a coupler, a shaft and an impeller, the holder comprises an installation disc and a shaft barrel, the installation disc comprises a cage-shaped structure formed by connecting an upper disc face with a lower disc face, the upper disc face comprises through holes used for installation, the upper disc face is fixedly connected with the lower disc face through arc-shaped rib plates, the lower disc face is connected with the shaft barrel, and the shaft barrel is fixedly connected with the shaft barrel. The upper end of the shaft is connected with the coupler; the lower end of the shaft is connected with impellers. The retainer is mainly used for fixing and mounting the shaft barrel, further fixing the shaft and the impeller, and providing the mounting requirements of the retainer; the shaft is mainly used for transmitting power and driving the impeller to stir so as to realize the temperature uniformity of the quenching medium.

The invention discloses a magnetic levitation pump with a symmetrical hollow thin-wall structure and a control method thereof.The magnetic levitation pump with the symmetrical hollow thin-wall structure comprises a shell, magnetic levitation blades and a magnetic levitation driving assembly, the shell comprises an upper pump shell and a lower pump shell connected with the upper pump shell in a sealed mode, and the magnetic levitation blades are arranged in the shell; the magnetic suspension blades are provided with symmetrical cavities, the positions, located between the cavities, of the magnetic suspension blades are provided with liquid inlet hollow channels, the positions, located on the outer sides of the cavities, of the magnetic suspension blades and the inner wall of the lower pump shell form thin-wall channels communicating with the liquid inlet hollow channels, and the magnetic suspension driving assembly is used for controlling and driving the magnetic suspension blades to rotate in the shell. The flow channel design of the pump is optimized, the microcontroller is used for controlling radial and axial stator currents in real time, high-speed rotation and suspension of rotor blades can be achieved, the turbulence effect when blood flows through can be greatly inhibited, eddy currents and local high-shear areas can be reduced, the fluid dynamic characteristics are improved, and hemolysis is reduced.

The invention discloses an intelligent wave generator, comprising a mover, a rotor and a stator which are coaxially nested from the inside to the outside, a chessboard-shaped mover permanent magnet is mounted on the outer surface of the mover, a rotor permanent magnet matched with the mover permanent magnet is mounted on the inner surface of the rotor, strip permanent magnets are evenly spaced and mounted on the outer surface thereof, the spiral magnetic fields generated by the mover permanent magnet and the rotor permanent magnet are coupled with each other, the stator comprises a plurality of winding modules evenly spaced along the circumferential direction, and all are connected to the load through respective switch modules, each winding module comprises at least one set of three-phase windings for generating induced electromotive force, the switch modules of each set of winding modules are connected to a controller, the controller is also connected to a sensor, the sensor is used to collect sea condition information where the intelligent wave generator is located, the controller receives the sea condition information, and selectively controls the corresponding winding modules to work through the switch modules, so that the wave generator is always in a maximum power output state.

The utility model discloses a kind of impact drill bits of quick replacement, including drill bit positioning seat, the flange of one end of drill bit positioning seat is connected on impact electric drill, the other end of drill bit positioning seat is rotatably connected with drill bit mounting seat, the part of drill bit mounting seat exposing drill bit positioning seat is inserted with drill bit body, the part of drill bit mounting seat in drill bit positioning seat is fixed with driving shaft, the output end of driving shaft is connected with impact electric drill, limit component is installed on drill bit mounting seat, locking assembly for driving limit component limit drill bit body is installed on drill bit positioning seat, screw sleeve, sleeve is moved in the process of thread rotation along drill bit positioning seat outer wall, drive connecting block to move downwards, so that inclined plane extrudes inclined block, locking block can be embedded in outer concave ring, can hinder connecting column to come out of drill bit mounting seat, reverse rotation sleeve, under the elastic force of reset spring, locking block will automatically separate from outer concave ring.

The utility model discloses a kind of cleaning devices for injection mold inner cavity, including box, clamping assembly is arranged in the box, fixed plate is fixedly installed in the box, the top side of fixed plate is equipped with sliding slot, multiple sliding plates are slidably installed in sliding slot, the top side of multiple sliding plates is fixedly connected with same gear ring, by two electric push rods drive clamping plate to move towards each other, cooperate with the antiskid structure of protective pad, different specifications of mold body can be formed stable clamping, avoid shaking influence effect in cleaning process, cylinder drives mold body to descend vertically, make cleaning cylinder extend into inner cavity, the meshing transmission of transmission gear and gear ring ensures that cleaning cylinder high -speed rotates, outside brush can remove adherent stain by scrubbing, cooperate with the combination of water pump in water pumping component, suction pipe, delivery pipe and spray head, water flows through the through-hole of cleaning cylinder and is directly shot into inner cavity, form the synergistic effect of scrubbing and flushing, compared with traditional single flushing mode, cleaning speed and efficiency can be greatly improved.

The utility model relates to the technical field of tapping devices, in particular to a detachable tapping fragment ejector capable of rotating at a high speed, which comprises a metal shell, six scrap discharge grooves are arranged on the outer surface of the metal shell, an upper round shell is fixedly connected to the middle of the upper end of the metal shell, a first screw hole is arranged on the right portion of the outer surface of the upper round shell, and a second screw hole is arranged on the right portion of the outer surface of the upper round shell. A tapper connecting rod is in threaded connection with the interior of the upper round shell, a second screw hole is formed in the right portion of the outer surface of the tapper connecting rod, a titanium-plated center drill is fixedly connected to the middle of the lower end of the tapper connecting rod, a bearing is fixedly connected to the middle of the upper shell wall of the metal shell, and a spring is connected to the outer side of the bearing in a sleeving mode. According to the detachable trepanning fragment ejector capable of rotating at high speed, high-speed rotation is achieved through linkage of the spring and the bearing, and compared with a traditional trepanning device, the trepanning precision and quality are improved through cooperation of the helical tooth groove, the carborundum coating, the scrap discharging groove and other structures, and meanwhile material scrapping is reduced.

The invention relates to the technical field of drilling equipment, in particular to an all-metal screw motor which comprises a stator shell, a motor stator and a motor rotor, the motor rotor is rotatably installed in the motor stator, the motor rotor is of a hollow structure, a liquid inlet is fixedly connected to the motor rotor, and a liquid outlet hole is formed in the motor rotor; a bypass valve structure is arranged at the top end of the stator shell, a connecting pipe is fixedly installed on a valve element of the bypass valve structure, the connecting pipe is connected into the liquid inlet, an upper connector is arranged on the bypass valve structure, a fixed turbine is arranged in a cavity of the motor rotor, a pushing structure is arranged on the motor stator, and a movable turbine is arranged in a cavity of the motor rotor. A ferromagnetic insertion rod is arranged at the bottom of the movable turbine, a bottom support is fixedly arranged in the cavity of the motor rotor, an insertion hole is formed in the bottom support, and a magnetic control structure is movably arranged on the stator shell; the screw motor is high in response speed, long in service life and high in adaptability.

The utility model discloses a three-dimensional holographic display device based on a projection array, which comprises a plastic shell, a glass cover, a brushless motor, a rotating mechanism, a projection mechanism and a control mechanism, and is characterized in that the glass cover is arranged at the top end of the plastic shell, and a plurality of cushion corners are arranged at the bottom end of the plastic shell; the brushless motor is fixedly arranged at the bottom end of the inner side of the plastic shell, and the driving end of the brushless motor faces the glass cover. The rotating mechanism is fixedly mounted at the driving end of the brushless motor; the projection mechanism is arranged on the inner side of the rotating mechanism; the control mechanisms are arranged at the bottom end of the inner side of the plastic shell and connected to the rotating mechanisms and the control mechanisms respectively, the device relates to the technical field of holographic display, the three-dimensional holographic display equipment based on the projection array achieves stable, efficient and high-quality three-dimensional holographic display, and unprecedented visual experience is brought to a user.

The invention relates to a tool head, a machine tool, a tool spindle and a tool unit. The tool head includes a tool mandrel, a tool, a first spindle, a second spindle, a first balancer, and a second balancer. The tool spindle, the tool, the first spindle, the second spindle, the first balancer and the second balancer are arranged coaxially with the axis of rotation. At least a portion of the first balancer is disposed between the tool and the first spindle in the axial direction. At least a portion of the second balancer is disposed between the tool and the second spindle in the axial direction. At least a portion of the first balancer is disposed radially inward of a radially inner end of the tool.

The utility model discloses a portable coffee grinder which comprises a grinding outer shell, a protective shell arranged on the outer side of the grinding outer shell, a grinding cover installed at the upper end of the protective shell, a protective cover installed on the outer side of the bottom of the grinding outer shell, a grinding base installed at the bottom of the protective cover, and a bearing grinding disc installed in the grinding outer shell. A fixing outer sleeve is arranged below the bearing grinding disc, a fixing base is installed at the bottom of the fixing outer sleeve, an outer sleeve shell is installed on the outer side of the fixing outer sleeve, grinding blades are installed in the bearing grinding disc, a switch button is arranged on the outer wall of the grinding outer sleeve, and a rotating wheel is connected to the bottom of the bearing grinding disc. The portable coffee grinder has the advantages that the portable coffee grinder is ingenious in design, compact in structure and convenient to carry and use. And through the design of the grinding shell, the protective shell and the protective cover, the stability and durability of the grinding machine are guaranteed, and meanwhile the use safety is improved.

The invention relates to the technical field of security lamps, and discloses a special scene security lamp which comprises a luggage compartment and a fixing seat, the fixing seat is fixedly connected to the bottom of the luggage compartment, a placing groove is formed in the fixing seat, and the special scene security lamp further comprises a security assembly used for rapidly processing smoke and open fire in an aircraft and preventing the smoke and the open fire from falling off. The danger to the aircraft and personnel in the aircraft is reduced; the escape guiding assembly is used for guiding an escape route set in the aircraft, the escape speed of personnel in the aircraft is increased, and the escape probability of the personnel is increased; when the smoke alarm detects that smoke in an airplane exceeds a normal value, the fixed box can be quickly moved out of the interior of the containing groove, dry powder is sprayed into an airplane cabin in the mode that the dry powder box and the water tank in the fixed box rotate, the fire extinguishing efficiency is greatly improved, and the possibility of after-combustion is reduced; and the loss in the aircraft and the risk of personnel injury are reduced.