150results about How to "Power foot" patented technology

The invention discloses an underwater flushing robot with eight propellers. The underwater flushing robot comprises an outer frame, a posture water depth sensor, two underwater cameras, two underwater floodlights, a top floating plate, a cylindrical sealing cabin, the eight propellers, four universal wheels, two scrubbing brushes, a bottom floating plate and two stepping motors. The underwater flushing robot with the eight propellers communicates with an upper computer through a zero-buoyancy cable, the upper computer acquires depth, posture and image information through data issued by the underwater robot so as to control corresponding propelling force of the propellers, depth keeping, navigation keeping, posture keeping and suspending are achieved, and a flushing device can be driven to flush a dam face of a dam, pool walls of a pool and the like. The underwater flushing robot is good in overall sealing performance and high in static stability and maneuverability and has certain expandability.

The invention relates to an oil additive and particularly discloses a methanol fuel additive and methanol gasoline prepared with the same. The methanol fuel additive comprises the following components in parts by weight: 15.9 to 20 parts of modifier, 8 to 12 parts of oxidant, 12 to 8 parts of activating agent, 15 to 17 parts of antiknock, 0.54 to 2.48 parts of cleaning agent, 40.5 to 34.5 parts of catalyst, 8 to 6 parts of corrosion inhibitor and 0.06 to 0.02 part of anti-attrition lubricant. According to the methanol gasoline prepared with the additive, methanol and gasoline can be completely soluble or instantly soluble after being mixed, so that the methanol gasoline is clear and bright in appearance, is not layered and is free from impurities; and the methanol gasoline has the characteristics of high octane value, stable burning, sufficient power and tiny contained colloid in running tests and examination, causes no corrosion and swelling reaction on materials of the conventional gasoline car, and can be mixed with unleaded gasoline for use or directly used on the premise of not changing an engine and an oil supply system of the conventional gasoline car.

The invention relates to a parallel dual-engine coaxial unmanned helicopter, belongs to the technical field of aircraft and aims to solve the problems that the prior aircraft is poor in carrying capacity and low in reliability. Two engines are symmetrically arranged and fixedly connected to the lower portion of a connection frame; a power coupler is fixedly connected to the middle of the connection frame; a reducer is fixedly connected to the upper portion of the connection frame; four belt drive sets are symmetrically arranged; each belt drive set is connected with an engine output shaft, a power coupler input shaft, a power coupler output shaft and a reducer input shaft on one side of the belt drive set; power of the two engines is decelerated by the belt drive sets, is collected and outputted by the power coupler, is transmitted to the reducer through the belt drive sets, and is transmitted to upper and lower rotors through two coaxial hollow spindles. Variable pitches of the upper and lower rotors are controlled through two independent pitch varying sets respectively. Power is centrally output after the power of the two engines is coupled; the parallel dual-engine coaxial unmanned helicopter is high in reliability, simple to control and reloadable.

The invention discloses a disc-type discharging machine for bilge discharging equipment, which comprises a bin body, a bottom plate, a discharging scraper and a drive device thereof. The bin body is arranged on the bottom plate; the discharging scraper is arranged in the bin body and is driven to rotate by the drive device thereof, and rotating axial direction is vertical; and the bottom of the bin body is provided with a discharge hole which is formed below a plane formed when the discharging scraper is rotated. The disc-type discharging machine has the advantages that: due to no limitation of the size of the discharge hole, the disc-type discharging machine can be used for the large-scale bin capacity and can discharge materials with different specific gravities smoothly, particularly the lightweight material. A conical cover is arranged on a cutter to play a role in guiding the materials to the discharge hole and reducing rotating resistance of the cutter; the disc-type discharging machine avoids material buildup and material blocking due to a scraper stripping mode of the discharge hole, and has the advantages of enough power, small vibration and low noise due to a low speed operating mode; and the equipment is more stable and reliable.

The invention discloses a pressurization adjusting transfusion bag, which comprises a bag body. The bottom of the bag body is connected with a transfusion tube, an air pressure adjusting mechanism which is communicated with the inside of the bag body and is structurally integrated with the bag body is disposed at the top of the bag body, the air pressure adjusting mechanism and the bag body are designed integrally, so that manufacturing cost is lowered, operation is more convenient, and practicality is high. The air pressure adjusting mechanism is powered by a high-pressure air sac, the transfusion bag is powered by the aid of pressurization of the high-pressure air sac, pollution of liquid medicine due to the fact that the liquid medicine directly contacts with air is avoided, hanging transfusion is omitted, power of high-pressure transfusion is enough, flow of gas can be accurately controlled, and accordingly, the speed of liquid flowing into a human body can be accurately controlled.

The objective of the invention is to provide an unmanned aerial vehicle used for panoramic photography. The unmanned aerial vehicle is particularly suitable for panoramic photography. The unmanned aerial vehicle includes a control device, a power supply, an electric actuator electrically connected to the power supply, and propellers connected to the electric actuator. The unmanned aerial vehicle is characterized in that the unmanned aerial vehicle also includes a shell and a vehicle main body connected to the inside of the shell; the electric actuator and the propellers are connected to the vehicle main body; the shell has a hollow structure, and is provided with photographing devices; the control device is electrically connected to the electric actuator and the photographing devices; theelectric actuator and the propellers are inside the shell; and a scheme including a middle frame and two hollow hemispheres is adopted, thus effectively protecting the vehicle main body of the unmanned aerial vehicle, preventing possible influences of collision on the unmanned aerial vehicle, improving safety and effectively avoiding possible harm to pedestrians when the unmanned aerial vehicle descends or falls.

The invention provides an auxiliary control device of elevator safety tongs. Under the condition that the structure of an existing speed governor is not changed, the auxiliary control device of the safety tongs is added, so that an elevator operates more safely. The auxiliary control device comprises a lift car motion parameter detecting device, a traction sheave motion parameter detecting device, a pneumatic system and a controller. The lift car motion parameter detecting device, the pneumatic system and the controller are fixedly connected with a lift car machine frame and synchronously move along with a lift car. When the lift car slips or the rated speed of the lift car exceeds a set value, a data processor in the controller enables an electromagnetic valve to start automatically through an executing circuit, high-pressure gas in a gas storage tank is made to flow to an air cylinder, a telescopic rod of the air cylinder moves upwards and pushes a safety tong lever mechanism, movable wedge blocks of the safety tongs are driven to move upwards, and therefore the elevator is braked and stopped.

The invention discloses a large-tonnage shore transport vehicle, comprising a vehicle frame, a left crawler traveling mechanism and a right crawler traveling mechanism. The left and right crawler traveling mechanisms are symmetrically installed at two sides of the vehicle frame by a suspension mechanism, and consist of crawler belts which are installed on the left crawler frame and the right crawler frame by a driving wheel and a guide wheel arranged on the front end and the rear end of the crawler frame, wherein the crawler frame is a floating box type structure. The crawler frame of the crawler walking mechanism adopts the floating box type structure (i.e., the floating box crawler traveling device), so that the unit grounding pressure of the device is reduced; the traveling device transports the goods and materials at the shore between the tidal zones or below the tidal zone and has the floating sailing ability; and the vehicle frame connecting structure realizes the series-connection and the parallel-connection of a plurality of machines, so that the larger transporting capability is realized.

The invention discloses a pipe-dredging vehicle, which comprises a vehicle chassis, a truck bed arranged on the vehicle chassis, a self-discharging dump bucket arranged inside the truck bed, a telescopic bracket, a windlass, a toolbox, a cleaning machine, a hydraulic block, a CPU controller and a remote controller arranged outside the truck bed, a conductor, and a pulley machine. The tail of the pipe-dredging vehicle is aligned with a pipeline A wellhead, while the front part is aligned with a pipeline B wellhead; a telescopic machine is pushed out, and a back wire rope passes through an excavator and is connected with an inner ring of a removable cover plate; and a front wire rope passes below the vehicle chassis, and moves forwards to get into the B wellhead and get out of the A wellhead to be connected with an outer ring of the excavator. CPU program is started to drive power; and driven by the wire rope to operate between the pipeline and the vehicle back and forth, the elevator sends dredged sludge and sandstone onto the vehicle and automatically unloads. The vehicle has high mechanization, automation level and stable performance, and can solve the problem that sanitation workers cannot solve, greatly saves the energy consumption, alleviates environment pollution, reduces the labor intensity of workers, and improves the working efficiency.

The invention discloses a segment-color slubby yarn production method. The segment-color slubby yarn production method includes the steps of (1), dosing according to compositions and the weight ratio, blending raw materials by a bale plucker, a mixing bale opener and a card-wire opener sequentially, feeding cotton by a vibratory hopper feeder and lapping to form cotton rolls by a lapper; (2), producing the cotton rolls into card slivers by a carding machine; (3), drawing the card slivers by three-channel drawing frames; (4), processing drawn slivers by a roving machine; (5), producing main body roving and color roving according to the step (1) to the step (4), and then spinning the produced main body roving and the produced color roving on a spinning machine; (6), removing yarn defects and winding obtained yarn into bobbin yarn by a bobbin winder. The segment-color slubby yarn produced by the method is sufficient in yarn strength, less in hairiness, rich in layer change and stereoscopic impression and higher in wearability.

The invention discloses an intelligent garage stable operation device. The device comprises a fixing base, support bases are fixed to the two ends of the top of the fixing base, mounting holes arranged at equal intervals are formed in the side edges of the supporting bases in the height direction of the support bases, sliding blocks are slidably sleeved with the mounting holes, a locating column is fixed to one end of each sliding block, a second electromagnetic chuck is installed at the other end of each sliding block, a threaded columns is in threaded connection with one end of each mountinghole, a first electromagnetic chuck is installed at the end, close to the corresponding sliding block, of each threaded column, springs are sleeved with the mounting holes, first grooves and second grooves which are alternatively arranged at equal intervals are formed in the side edges of the support based in the height direction of the support bases, rising induction blocks are installed in thefirst grooves, and falling induction blocks are installed in the second grooves. Accordingly, a double-power-source structure is adopted, operation is stable, the very good limiting anti-falling effect is achieved, and operation is safe and reliable.

The invention provides a coating modified high-nickel quaternary cathode material as well as a preparation method and application. The chemical formula of the material is (LiaNi(1-x-y-z)CoxAlyMnz)(1-b)MbO2, wherein x, y, z, a and b are molar fractions, x is greater than or equal to 0.03 and less than or equal to 0.15, y is greater than 0.01 and less than 0.05, z is greater than 0.01 and less than0.05, (1-x-y-z) is greater than 0.6 and less than 0.9, a is greater than or equal to 1 and less than or equal to 1.1, and b is greater than or equal to 0 and less than or equal to 0.02. The inventionprovides a preparation method and application of the material. The coating modified high-nickel quaternary cathode material provided by the invention has the advantages of stable structure, high safety, long cycle life and high thermal stability.

The invention discloses a mini road dragging wrecker which comprises a small dragging motor car and a foldable dragging device arranged on tail part of the motor car, wherein the foldable dragging device comprises a containing box, a folding mechanism, a lifting mechanism, a wheel embracing mechanism and a dragging wheel; the containing box is arranged at upper end of the tail part of the motor car; one end of the folding mechanism is hinged with the motor car; the lifting mechanism and the wheel embracing mechanism are both arranged at the other end of the folding mechanism; and the dragging wheel is connected to the lifting mechanism. The small dragging motor car is adopted in the wrecker, so that the wrecker is small in volume, has sufficient power and is suitable for various landforms. The wrecker has better flexibility and trafficability on a crowded urban road and a narrow street and is beneficial to quickly arriving at a rescuing site and realizing the dragging and hauling operations performed on a fault vehicle by the foldable dragging device.

The present invention relates to a methanol fuel, and belongs to a power equipment raw material. The methanol fuel contains 0.3-0.4% of ferrocene, 4-5% of a starting aid, 0.3-0.5% of an anti-corrosion agent, 0.3-0.5% of an anti-explosion agent, 1-2% of a co-solvent, 1% of a wear-resistant anti-swelling agent, 0.5% of a lubricant, 0.3-0.4% of a stabilizer, and the balance of methanol, wherein the starting aid is dimethyl ether or 120# solvent oil, the anti-corrosion agent is benzotriazole, the anti-explosion agent is methyl tert-butyl ether, the co-solvent is dimethoxymethane, the wear-resistant anti-swelling agent is triethanolamine, and the lubricant is silicone oil. The methanol fuel of the present invention has advantages of enough power, environmental protection and engine cleaning; and compared with the use of other vehicle fuels, the use of the methanol fuel f the present invention has the following advantages that after the locomotive uses the methanol fuel, the engine is clean and the service life is long.

The invention provides a Mg-doped nickel-cobalt-aluminum ternary cathode material and a preparation method and application thereof. The Mg-doped nickel-cobalt-aluminum ternary cathode material has thechemical formula of (LiaNi1-x-yCoxAly)1-bMgbO2, with y>0, 1-x-y>0, 1< / =a< / =1.1, and 0<b< / =0.01. The preparation method comprises: sintering a ternary cathode material precursor Ni1-x-yCoxAly(OH)2+y;adding a lithium source and a doping material into the sintering resultant, and carrying out sintering; performing tertiary sintering to obtain the target product. The Mg-doped nickel-cobalt-aluminumternary cathode material prepared herein has good cycle performance. The preparation method having the triple sintering steps has simple technicality and controllable process and facilitates industrial large-scale production.

The invention provides a Ti-doped nickel-cobalt-aluminum ternary lithium ion battery positive pole material and a preparation method and use thereof. The material has a chemical formula of (LiaNi1-x-yCoxAly)1-bTibO2, x)0, y)0, 1-x-y)0, wherein a is greater than or equal to 1 and less than or equal to 1.1 and b is greater than 0 and less than or equal to 0.01. The preparation method comprises sintering a ternary positive electrode material precursor Ni1-x-yCoxAly(OH)2+y, adding a lithium source and a doping material into the sintering product, carrying out sintering and carrying out ternary sintering to obtain a desired product. The Ti-doped nickel-cobalt-aluminum ternary lithium ion battery positive pole material has excellent cycle performances. The preparation method comprises three sintering steps, has simple processes, is easy to control and is suitable for industrial production.

The invention discloses a driving system for a mining hybrid power trackless rubber-tyred vehicle, belonging to the technical field of driving devices. The driving system comprises an engine, a generator, a storage battery, an illumination signal lamp, an electric horn, a display screen, an operation box, a pedal switch, a control device and a motor, wherein the engine is electrically connected with the generator, the illumination signal lamp and the electric horn are electrically connected with the storage battery, the generator, the operation box, the pedal switch, the display screen, the storage battery and the motor are all electrically connected with the control device. The driving system is characterized by further comprising a coupling device, wherein the generator, the control device and the motor are electrically connected with the coupling device, and the coupling device is electrically connected with the driving axle of the trackless rubber-tyred vehicle. The driving system has the beneficial effects that as the driving system for the hybrid power trackless rubber-tyred vehicle is jointly driven by the engine and the storage battery, the driving system has the advantages of the sufficient power and the strong endurance capability of a diesel engine as well as the environment protection, high efficiency and the flexibility of the storage battery, and multiple operational modes of the driving system are suitable for complex road situations under a shaft.

The invention provides a flashboard for a water conservancy project and relates to the field of water conservancy projects. The flashboard is used for being mounted on a gate system of the water conservancy project, the gate system comprises a water conservancy body and a gate mechanism, the water conservancy body is provided with a navigation opening, the gate mechanism is used for opening or closing the navigation opening and comprises a clearing mechanism and the flashboard, a first sliding groove and a second sliding groove are formed in the two side walls of the navigation opening correspondingly, the first sliding groove is matched with the flashboard, the second sliding groove is matched with the clearing mechanism, the flashboard is slidably embedded in the first sliding groove, and the clearing mechanism is slidably embedded in the second sliding groove and used for clearing floats on the two sides of the flashboard. According to the flashboard for the water conservancy project, the flashboard is driven by a piston cylinder, consumed energy is reduced greatly, power of the piston cylinder is quite sufficient, and the service life is long. In addition, the gate system is provided with the clearing mechanism, the floats adhering to the periphery of the flashboard can be fished completely, and the situation that a downstream water body is polluted during gate opening is avoided.

A nickel-cobalt-aluminum ternary lithium ion battery anode material, and a preparation method therefor and an application thereof. The chemical formula of the material is (Li aNi 1-x-yCo xAl y) 1-bM bO 2, x>0, y>0, 1-x-y>0, 1<=a<=1.1, 0<b<=0.02. The preparation method for the material comprises: firstly sintering a ternary anode material precursor Ni 1-x-yCo xAl y(OH) 2+y; then adding the sinteredproduct into a lithium source for sintering; and finally adding a coating material and sintering to obtain a target product. The nickel-cobalt-aluminum ternary lithium ion battery anode material synthesized according to the preparation method has excellent cycle performance. The described preparation method is simple in technology, controllable in process and easy for industrial mass production.

The invention discloses a heavy type duplex chain roller conveyor. The heavy type duplex chain roller conveyor comprises a shell with the top end being open; the vertical section of the shell is in aU shape; a fixing rack is installed at the top opening of the shell; a single-end cylinder is fixed to the middle position of the top end of the fixing rack through screws; a piston rod of the single-end cylinder is connected with a horizontally-arranged limiting framework; the limiting framework is located inside the fixing rack; a plurality of second guide rolls distributed in an array mode arerotationally connected inside the limiting framework; a horizontally-arranged dual-end cylinder is installed in the middle position of the bottom end of the shell; vertically-arranged movable plates are welded to two piston rods of the dual-end cylinder and located on the two sides of the shell separately; and a plurality of evenly-distributed driving rolls are rotationally connected inside the shell. By means of the heavy type duplex chain roller conveyor, materials can be driven to be conveyed on the conveying rolls and are limited at the same time so as not to topple over or collide with the inner wall of the conveyor, and a first transmission chain can be prevented from being loosened after long-time movement.

The invention discloses a pulsator washing machine and a control method. The pulsator washing machine comprises an inner drum and an outer drum, the inner drum comprises an inner drum bottom, an impeller is arranged in the inner drum bottom, a diversion channel is formed in the portion, on the periphery of the impeller, of the inner drum bottom, and when the impeller rotates, water flow is pushed to enter the portion between the inner drum and the outer drum along the diversion channel, climbs upwards along the outer drum and is ejected into the inner drum. Accordingly, by making the transversely penetrating diversion channel formed in the inner drum bottom of the washing machine, water is pushed through the impeller, the water flow is pushed to the portion between the inner drum and the outer drum, the water flow can climb upwards to an inner drum opening along the inner wall of the outer drum and is ejected into the inner drum, the ejection force is high, the number of water channels formed in the inner drum wall can be reduced, the volume of capacity of the inner drum is increased, water can be sprayed into the inner drum from the inner drum opening, the water can be sprayed to clothes such as down jackets which are high in suspension force, and the washing effect on various clothes is enhanced.

The invention discloses a passive pipeline cleaning robot. A cleaning device and a pusing plate are arranged close to an air inlet and an air outlet respectively and are hinged through two supporting devices; one end of the cleaning device is coaxially connected with one end of the first supporting device, one end of the pushing plate is coaxially connected with one end of a second supporting device, and the other ends of the first supporting device and the second supporting device are flexibly hinged through a flexible connector; the cleaning device comprises a cleaning fixing shaft, a cleaning seat body, a plurality of cleaning assemblies, fan blades and a speed reducing mechanism; and the first supporting device and the second supporting device are the same in structure and each comprise a supporting shaft, a supporting arm, a supporting seat body, a left rotating wheel, a right rotating wheel and an elastic supporting assembly. The self-adaptive passive cleaning robot is short in transmission route, high in transmission efficiency, large in cleaning torque, high in working reliability, capable of preventing wheels from being abraded easily and more suitable for cleaning operation of bent pipelines, cleaning power and walking power do not interfere with each other, and power is sufficient.

The invention relates to a crawler-type harvester for cyperus esculentus. According to the technical scheme, a soil crushing and feeding device driven by an engine, a lifting and conveying device, anupper layer vibrating screen, an auger-type soil throwing and crushing device, a lower layer vibrating screen, a horizontal conveying vibrating screen and a material receiving and lifting mechanism are arranged on a frame; a feeding end of the soil crushing and feeding device is connected with a feeding end of the lifting and conveying device; a discharge end of the lifting and conveying device isconnected with a feeding end of the upper layer vibrating screen; a discharge end of the lower layer vibrating screen is connected with a feeding end of the horizontal conveying vibrating screen; a discharge end of the horizontal conveying vibrating screen is connected with a feeding hole of the material receiving and lifting mechanism; a discharge hole of the material receiving and lifting mechanism is connected with a feeding hole of the upper part of a harvesting box; and a travelling mechanism is a travelling crawler arranged at two sides of a chassis. The crawler-type harvester has a wide application range, integrates multiple functions of excavating and soil crushing, root crushing, separating, screening and recycling, is suitable for high-efficiency harvesting of the cyperus esculentus, is easy to move, and has a great popularization prospect.

The invention provides a river channel floating dirt treatment device based on solar driving, and relates to the technical field of solar energy. The river channel floating dirt treatment device basedon solar driving comprises fixing devices arranged on river slopes on the two sides of a river channel, and an intercepting device placed in the middle of the river channel, wherein the interceptingdevice intercepts floating dirt floating and flowing in the river channel and collects and salvages the floating dirt; and each fixing device comprises a fixing bottom foot, a supporting rod, a sliding rod and a connecting rod, wherein the fixing bottom foot is fixed to the river slope edges close to the two sides of the river channel. According to the river channel floating dirt treatment devicebased on solar driving, the fixing devices are mounted on the river slopes on the two sides of the river channel, the intercepting device placed in the middle of the river channel is fixed through thefixing devices, and thus the intercepting device is placed in the middle of the river channel more firmly and reliably; and the intercepting device is placed in the middle of the river channel to intercept and collect the floating dirt floating and flowing in the river channel, subsequent salvage is facilitated, and the salvage efficiency of the floating dirt in the river channel is improved.

The invention provides a doped nickel-cobalt-aluminum ternary lithium-ion battery positive electrode material as well as a preparation method and application. A chemical formula of the material is asfollows: (LiaNi1-x-yCoxAly)1-bMbO2, wherein x is greater than 0 and y is greater than 0; the 1-x-y is greater than 0; the a is greater than or equal to 1 and less than or equal to 1.1; the b is greater than 0 and less than or equal to 0.01. A preparation method of the material comprises the following steps: firstly, sintering a ternary positive electrode material precursor Ni1-x-yCoxAly(OH)2+y; then adding a sintered product into a lithium source and a doping material and sintering; finally, carrying out third-time sintering to obtain a target product. The doped nickel-cobalt-aluminum ternarylithium-ion battery positive electrode material synthesized by the preparation method provided by the invention has good circulating performance. The preparation method provided by the invention comprises three times of sintering steps and has the advantages of simple technology, controllable process and easiness for industrialized mass production.

The invention provides an MgO coated-nickel, cobalt and aluminum ternary lithium ion battery anode material which comprises a lithium nickel-and-cobalt aluminate material and MgO covering the surfaceof the lithium nickel-and-cobalt aluminate material, wherein a chemical formula of the MgO coated-nickel, cobalt and aluminum ternary lithium ion battery anode material is shown in a formula (I): (LiaNi(1-x-y)CoxMgy)(1-b)MgbO2, wherein x is greater than 0, y is greater than 0, 1-x-y is greater than 0, a is greater than or equal to 1 and less than or equal to 1.1, and b is greater than 0 and less than or equal to 0.02. The preparation method of the material comprises the steps of sintering a ternary anode material precursor Ni(1-x-y)CoxMgy(OH)(2+y), then adding a lithium source into a substanceobtained by sintering for sintering, and finally adding a coating material MgO for sintering, thus obtaining a target product. The MgO coated-nickel, cobalt and aluminum ternary lithium ion battery anode material synthesized by the preparation method is excellent in cycle performance.

The invention discloses a double-swing tail type miniature underwater robot and a control method thereof, belonging to the technical field of robots. It includes a main body and a fishtail drive assembly, the fishtail drive assembly includes a drive motor, a rotating plate, an upper swing tail mechanism and a lower swing tail mechanism, the drive motor is connected with the rotating plate and is fixed on the body, and drives the rotating plate to make circular motions, The rotating disc drives the upper swing tail mechanism and the lower swing tail mechanism to swing relative to the main body. The invention utilizes a single power source to realize the driving of the double tail fins. After the tail fins swing, they can automatically return to the original position by the restoring force of the spring, and are driven by the rotating disc to swing in the next cycle, and the double tail fins are used to drive the fins. , high work efficiency, small size, sufficient power, meet the needs of use in deeper waters, and will not produce large noise, friendly to the surrounding environment, and has the advantages of simple structure, reasonable design, and easy manufacturing.

The invention discloses a large punching machining system for gearbox oil seal machining and belongs to the technical field of punching machining equipment. According to the key points of the technical scheme, a strip material uncoiling unit comprises a base, a rotating table, material coil fixing devices, a material guiding frame, a material coil close-abutting device and a material coil compressing device, wherein the material coil fixing devices are distributed on the two opposite side faces of the rotating table in the mode of being in central symmetry around the rotating axis of the rotating table, the material guiding frame is slidably arranged on the bottom face of one side of the base, the material coil close-abutting device is arranged on the material guiding frame and used for applying axial pressure to the end face, away from the rotating table, of a material coil during uncoiling, and the material coil compressing device is arranged at the top of the material guiding frameand used for applying radial pressure to the material coil during uncoiling. When uncoiled, the material coil can be pre-fixed at the material coil fixing device on the other side of the rotating table, the material coil is rapidly replaced through working of the rotating table, thus the material coil replacing efficiency is greatly improved, and the large punching machining system can adapt to efficient punching machining of a gearbox oil seal.

The invention discloses a friction cleaning machine. The friction cleaning machine comprises a box and a rotary shaft. A cleaning space is formed in the box. A screen is mounted on the inner side of a cavity. The box is provided with a feeding port and a discharging port, and the feeding port and the discharging port communicate with the cleaning space. The rotary shaft is pivoted to the box and located in the cleaning space. A continuous spiral blade, oblique blade assemblies and straight blade assemblies are sequentially arranged on the outer surface of the rotary shaft in the axial direction of the rotary shaft. The spiral blade is located in the position of the feeding port and used for conveying materials entering the cleaning space from the feeding port to the oblique blade assemblies. The oblique blade assemblies are used for scattering the materials and making the materials rub with the screen, so that dirt adhering to the materials falls and is thrown out of the screen. The straight blade assemblies are located in the position of the discharging port and used for throwing the materials out from the discharging port. The friction cleaning machine is good in cleaning effect, and power is strong during discharging so that the materials can be conveyed to the next station conveniently.