162results about How to "Reduce entanglement" patented technology

A powered, lightweight soil tillage device, including an elongated hollow support member having a motor and handle at the upper end thereof, and the tillage assembly mounted at the lower end thereof. The tillage assembly comprises a pair of beams which are mounted on opposite sides of a gearbox and driven thereby. The upper ends of the beams are attached to idler or rocker beams so that each of the beams is moved in a generally circular path. Hoe blades or the like are secured to the forward ends of the beams and extend inwardly therefrom so that the hoe blades are disposed one behind the other.

Polymer brushes (50) in a resin that create phonon pathways therein The polymer brushes themselves comprise structured polymer hairs having a density of 0.8 to 1.0 g / cc, a chain length of 1 to 1000 nm, and a thermal conductivity of 0.5 to 5.0 W / mK. The polymer brushes are 10-25% by volume of the resin, and the polymer hairs can orient surrounding resin molecules to the polymer hairs alignment (55).

The invention discloses a reduction clutch for a washing machine and the washing machine. The reduction clutch comprises an input shaft, an input shaft sleeve, a brake wheel, a reducer, a dewatering shaft, an output shaft, a clutch device and a shell. The input shaft sleeve is installed on the input shaft in a sleeving mode, the dewatering shaft is installed on the output shaft in a sleeving mode, the reducer is installed on an inner cavity of the brake wheel, and the input shaft, the input shaft sleeve, the brake wheel and the output shaft are connected with the reducer respectively. The reducer is a double planetary gear train and comprises a first planetary gear train and a second planetary gear train, and the first planetary gear train and the second planetary gear train use a same planet carrier. The input shaft sleeve and the second planetary gear train are connected into one, the dewatering shaft and the brake wheel are connected into one, the output shaft is connected with input shaft in a transmission mode through the first planetary gear train, and the dewatering shaft is connected with the output shaft in a transmission mode through the brake wheel and the second planetary gear train. The conversion between the washing condition and the dewatering condition is controlled through the clutch device. The reduction clutch for the washing machine and the washing machine have the advantages that the structure is simple and compact, the manufacturing cost is low, the transmission is safe, reliable and efficient, the service life is long, and the noise is low.

The invention discloses a biological refining lignin-compatibilized thermoplastic biodegradable polymer material and a preparation method thereof. The material comprises the following components in parts by weight: 30-80 parts of thermoplastic polyester, 20-70 parts of biological refining lignin and 10-30 parts of assistant. The preparation method comprises the following steps: 1) crushing and screening the biological refining lignin and the polyester into 60-300 meshes through a high-speed pulverizer according to the parts by mass; 2) mixing the crushed mixture and the assistant through a high-speed mixer for 3-15 minutes at high speed under the conditions that the temperature is 65-105 DEG C and the rotating speed is 100-2000 r / min; and 3) adding the mixture and the assistant to a hopper of a twin-screw extruder, wherein the heating temperature of the extruder is 130-180 DEG C, the temperature of a handpiece is 140-180 DEG C and the rotating speed is 40-400 r / min. The biological refining lignin-compatibilized thermoplastic biodegradable polymer material has the advantages of being environment-friendly, low in cost, simple in preparation technology, and stable in product performance, and has a high promotional value.

The invention discloses a preparation technology for an extra-large-point cashmere adhesive lining. The preparation technology for the extra-large-point cashmere adhesive lining comprises the following steps in sequence: base cloth weaving, base cloth pretreatment, washing and smooth processing, hot melt adhesive coating, baking and reeling inspection. According to the preparation technology for the extra-large-point cashmere adhesive lining, 50D polyester drawn textured yarns are adopted to weaving the base cloth, the base cloth has good elasticity and extensibility, is soft in hand feeling, firm, resistant to wrinkles and strong in wool type feeling; a protective layer enables the sliding performance, the softness and the elasticity of the base cloth to be in an appropriate level, tangling among the fabric is reduced, the wet friction factor between the base cloth and mechanical metal components is lowered to prevent folding lines, scratches and other problems from being generated on the surface of the base cloth, and quality of products is guaranteed. An extra-large-point CP11mesh circular net is adopted, a polyamide and polyester hot melt adhesive system is adopted to carry out two-point coating to form the extra-large-point cashmere adhesive lining, after the base cloth and cashmere fabric are bonded, good peeling strength is guaranteed, and original soft hand feeling of the fabric is maintained.

A fishing rod cover system for protecting the fishing rod from damage and for reducing entanglement of the fishing line during nonuse. The inventive device includes an elongate cover having an upper opening and a lower opening, a pair of catch members attached to the elongate cover adjacent the lower opening, and an attaching member catchably attachable to the catch members. The elongate cover is formed to receive the elongate shaft of a fishing rod without damaging the shaft. The attaching member is formed to snugly engage the distal end of the handle of the fishing rod opposite of the shaft for retaining the cover about the shaft of the fishing rod. The attaching member includes a first strap and a second strap each having a plurality of nubs that are catchably inserted within the catch members for retaining the attaching member upon handle of the fishing rod.

The invention relates to a novel PEG (polyethylene glycol) in-situ covalent grafted modified alginate / polycation microcapsule. The microcapsule is a hydrogel bead of alginate, or the inside of the microcapsule is filled with liquid or hydrogel of alginate and the outer surface is a polyelectrolyte composite hydrogel film which is formed by polycation and alginate; a covalent bond is formed on the microcapsule through a click chemical reaction between an alkylene group and an azide group on the alginate, and PEG is grafted to the surface of the alginate hydrogel bead or alginate / polycation / alginate microcapsule in an in-situ covalent mode; and a finished product is applicable to embedding of bioactive substances and living cells. The microcapsule film not only keeps excellent biocompatibility but also takes good film strength into consideration, so as to guarantee the integrity of the film in the processes of tissue cell transplantation as well as cell culture and application.

The invention relates to an alginate-chitosan microcapsule modified via in situ covalent PEG grafting. The structure of the microcapsule is divided into two parts, i.e., a microcapsule membrane and an inner core, wherein the microcapsule membrane is a polyelectrolyte composite hydrogel membrane formed by chitosan and alginate, the surface of the membrane is modified via in situ covalent PEG grafting, and the inner core is an alginate liquid or alginate hydrogel environment containing living cells. Because of resistance to protein adsorption, the microcapsule is applied to living cell encapsulation and used as an immunoisolation carrier for cell transplantation.

The invention discloses a temperature control box and a refrigerator with the same. The temperature control box comprises a box body, a display control panel and a main control panel, wherein both the display control panel and the main control panel are elongated and arranged in the box body. The main control panel and the display control panel are parallelly arranged at a preset interval which is larger than 15mm. According to the temperature control box, the display control panel and the main control panel are elongated and parallelly arranged in the box body, so that close connection of electronic components on the main control panel and the display control panel is facilitated; the elongated main control panel occupies small space, and the size of the temperature control box can be effectively reduced, so that the production cost of the temperature control box can be reduced; and the size of the temperature control box is small, so that wires in the temperature control box are short, the winding degree of the wires in the box body is reduced, arrangement of the wires in the box body is facilitated, and the check difficulty during system failure is reduced.

The invention discloses a slowdown clutch for a washing machine. The slowdown clutch comprises an input shaft, an input shaft sleeve, a brake wheel, a speed reducer, a dewatering shaft, an output shaft, a lower shell and a clutch device, wherein the speed reducer is installed in an inner cavity of the brake wheel, the dewatering shaft and the brake wheel are connected into a whole, the input shaft, the input shaft sleeve, the brake wheel and the output shaft are all connected with the speed reducer, the speed reducer is a double-planet gear train composed of a first planet gear train body and a second planet gear train body, the input shaft sleeve and a wheel carrier of the second planet gear train body are connected into a whole, and the input shaft sleeve is movably connected with the brake wheel; the clutch device comprises a positioning disc fixedly installed on the lower shell, a torque transmission shaft sleeve fixedly installed on the input shaft, a clutch disc installed on the input shaft sleeve and capable of being connected with or disconnected from the positioning disc and the torque transmission shaft sleeve, and a clutch control mechanism used for controlling the clutch disc to be connected with or disconnected from the positioning disc and the torque transmission shaft sleeve. The slowdown clutch has the advantages of being simple and compact in structure, low in manufacturing cost, safe and reliable in transmission, efficient, long in service life and low in noise.

The invention discloses a wireless connection method for a multi-channel bio-signal collector and a sensor. The method comprises the steps of 1, powering on a receiver to generate a random channel; 2, preempting the random channel by the receiver, sending the pairing information to a common channel by the receiver, and waiting the pairing at a sensing front end; 3, powering on the sensing front end, receiving the pairing information through the common channel, and acquiring effective data from the sensing front end by the receiver after the receiver and the sensing front end are successfully paired; 4, on the condition that a data packet loss rate reaches a threshold to interfere a communication channel between the receiver and the sensing front end, automatically scanning available idle channels in the space by the receiver, notifying the sensing front end and switching to a new idle channel to continue the operation at the same time. In this way, the wireless connection method for the multi-channel bio-signal collector and the sensor is simple and intuitive in pairing, and the rate of each wireless channel is independent and stable. Meanwhile, the space capacity is large.

An attachment system for tools includes a housing with a wall defining an open central region. The housing has a first slot and a second slot spaced from the first slot, each slot extending through the wall to the open central region. A rotating member is disposed in the open central region. A clip member has a clip protrusion with neck, head and tip portions, the neck portion sized to be slidably received in one of the slots. The tip portion is configured to engage the rotating member to cause it to rotate about a central longitudinal axis as the neck portion moves distally along one of the slots, causing a catch surface to align with the tip portion and a channel to align with a tip portion of a second clip member retained in the second slot, thereby retaining the first clip member and releasing the second clip member.

Presented is a system and method via nature-inspired design and engineering to autonomously fish, sort and deliver the catch. It implements rope-less fishing via a novel variable buoyancy device and an autonomous aerial and underwater vehicle as a fishing gear carrier. Its versatile capabilities are comprised of the AI sorting capability to comply with regulations, the capability to capture renewable energy to reduce operating costs, the capability to both passively fish with bait and proactively hunt for fish and the capability to gather intelligence to find optimal fishing grounds.

A clip for immobilizing leaflets of a cardiac or venous valve includes a hub having a pair of tangle resistant spring-biased outer arms coupled to an inferior end of the hub and a pair of tangle resistant spring-biased inner arms adjacent to the outer arms and coupled to a superior end of the hub. A delivery catheter may be used to position the valve clip adjacent a target valve while the outer and inner arms are biased in an opened position relative to each other. After the valve leaflets are located between the opened outer and inner arms, the biasing forces may be released to allow the clipto self-close the clip over the valve leaflets.

The invention discloses a dacron FDY oiling agent and a preparation method thereof, and relates to the field of dacron spinning oiling agents. The dacron FDY oiling agent is composed of the followingcomponents of, in percentage by weight, 14%-33% of base oil, 24%-38% of a smoothing agent, 7%-11% of a bundling agent, 7%-11% of an emulsifier, 5%-7% of an antistatic agent, 1%-3% of a penetrant, andthe balance additives. According to the dacron FDY oiling agent and the preparation method thereof, through the selection and proportioning of monomers, the prepared FDY oiling agent has good comprehensive properties of smoothness, bundling, static electricity resistance, permeation, heat resistance, sizing and uniform adhesion, is good in spinnability, greatly reduces abnormal broken filaments, broken ends, white powder and tension fluctuation and winding phenomena, and can significantly improve the superior product rate under the same spinning process conditions. In the subsequent printing and dyeing process, dyeing is difficult, the phenomenon of uneven dyeing is reduced, and the fiber dyeing M rate is increased.

The invention discloses an intelligent visitor access control system for a district. The intelligent visitor access control system comprises: a visitor visiting assembly; a data transmission assembly, which comprises a data storage module, an output module and a reception module; an entrance gate access control assembly, which comprises a gate body, a pair of door leaves, a first recognizer, a first comparison module and a first driving module; and a control assembly, which comprises a control module and an execution module. The intelligent visitor access control system is such configured that when two-dimensional code information recognized by the reception module and the first recognizer is identical and is in a valid period, the pair of door leaves are opened, or otherwise the pair of door leaves are closed; and when the pair of door leaves extend out, the free ends of the right and left door leaves approach each other to form a plane which forms an included angle of 30 to 60 DEG C relative to a passing direction so as to restrict passing. According to the intelligent visitor access control system, a pair of door leaves facilitates passing of a visitor are arranged at the entrance of the district through two-dimensional code interaction, recognition and confirmation of an owner, the visitor and an entrance guard terminal; through query of two-dimensional code information three times, people without authority are not allowed to pass; thus, the intelligent visitor access control system is safer and more efficient, convenient and intelligent.

Polymer brushes (50) in a resin that create phonon pathways therein. The polymer brushes themselves comprise structured polymer hairs having a density of 0.8 to 1.0 g / cc, a chain length of 1 to 1000 nm, and a thermal conductivity of 0.5 to 5.0 W / mK. The polymer brushes are 10-25% by volume of the resin, and the polymer hairs can orient surrounding resin molecules to the polymer hairs alignment (55).

The invention discloses a double-row silk thread oiling device. The double-row silk thread oiling device comprises an oil cover and an oiling box; oil overflowing boxes are arranged on the two sides of the oiling box; two rows of entrance holes which are distributed in a staggered way are formed in the oil cover; threading holes are formed in the two sides of the oiling box correspondingly; the bottom surface of each threading hole is an inclined surface; the lowest end of each inclined surface faces towards each oil overflowing box; a flow guide groove is formed at the bottom end of the outerside of each threading hole; an oiling roller is arranged in the oiling box; a spiral winding groove is formed in the surface of the oiling roller; a plurality of oil outlet holes are formed in the surface of the winding groove; an oil inlet channel capable of running through axially is formed in the end face of the oiling roller; the oil inlet channel is communicated with the oil outlet holes through an oil groove; a pair of extruding rollers are arranged in the oil overflowing box; and outgoing holes are formed in the two outer sides of the oil overflowing box. The double-row silk thread oiling device has the characteristics of oiling uniformly and improving silk thread quality, and also has the characteristics of large quantity of oiling silk threads, insusceptibility to winding and intersecting, low pollution and low cost.

The invention discloses a processing method of a drawing frame and a core spun yarn. The drawing frame includes a feeding cylinder, a guide bar roller, a guide bar frame, a fiber bar positioning plate, a feeding device and a rubber roller. The guide bar frame is arranged on one side of the fiber bar positioning plate. The feeding device is arranged on the side of the rubber roller. The guide bar frame includes an upper guide bar frame, a middle guide bar frame and a lower guide bar frame. The feeding device includes a fixed plate, a positioning plate arranged on the fixed plate. The positioning plate is provided with an upper covered yarn positioning hole, a core yarn positioning hole and a lower covered yarn positioning hole. When being processed, corn yarns pass through the middle guidebar frame and the core yarn positioning hole, and covered yarns completely cover the core yarns after respectively passing through the upper and lower guide bar frame and the upper and lower coveringyarn positioning hole. The core spun yarn made according to the processing method of the drawing frame and the core spun yarns have the advantages of being high in coverage rate, strong in yarn cohesion, difficult in peeling, soft in feeling of the core spun yarns and good in appearance.

The invention relates to a chitosan / 5-hydroxymethylfurfural composition preparation method. The method includes dissolving a chitosan substance by an acid aqueous solution to obtain a solution A, mixing the solution A with a solution containing 5-hydroxymethylfurfural to obtain a pre-reaction solution, adding alkali liquor into the pre-reaction solution to regulate a pH (potential of hydrogen) value of the pre-reaction solution, subjecting the pre-reaction solution to condensation reaction at a stirring speed of 100-500r / min at the temperature of 4-85 DEG C to obtain a gelatinous or flocculent chitosan / 5-hydroxymethylfurfural composition, and subjecting the chitosan / 5-hydroxymethylfurfural composition obtained after the reaction to dialysis treatment by deionized water prior to freeze drying so as to obtain a dry chitosan / 5-hydroxymethylfurfural composition. By the aid of the chitosan / 5-hydroxymethylfurfural composition prepared according to the chitosan / 5-hydroxymethylfurfural composition preparation method, more -NH2 radical groups can be retained, so that more excellent unique antibacterial performance, biological adhesion performance and the like can be retained.

The invention relates to an optical path assembly auxiliary device of a three-axis integral optical fiber gyroscope. In the optical path assembly auxiliary device, a horizontal rotary plate is connected with a base by a clamping spring through a shaft A, the horizontal rotary plate can rotate relative to the base, the horizontal rotary plate is connected with an angle positioning block A through a short rotary shaft A, the horizontal rotary plate can rotate relative to the angle positioning block A, the horizontal rotary plate is connected with an angle positioning block B through a short rotary shaft B, the horizontal rotary plate can rotate relative to the angle positioning block B, a pitch rotary plate is connected with the horizontal rotary plate through a long rotary shaft A and a long rotary shaft B, the pitch rotary plate can rotate relative to the horizontal rotary plate, an angle rotary plate is connected with the pitch rotary plate by a clamping spring through a shaft B, the angle rotary plate can rotate relative to the pitch rotary plate, and the angle rotary plate is provided with a hole matrix for mounting and fixing a three-axis integral optical fiber gyroscope body. The optical path assembly auxiliary device aims to provide fixing equipment and gesture adjusting equipment for the assembly of the optical path of the three-axis integral optical fiber gyroscope, the assembly efficiency of the optical path is improved, and the batch production of the gyroscope is promoted; additionally, the risks of breakage of an optical device tail fiber and damage of an optical device, due to false operation of operators, are reduced during the optical path assembly process, and the qualified rate of the gyroscope in production is improved.

An absorbent article for pets includes a top surface layer, a back surface layer, and an absorbent body, and is formed in a rectangular shape having opposing first and second end portions, and a pair of opposing side portions that are perpendicular to the first and second end portions, The top surface layer side of the first end portion is arranged on the body of the pet, and the top surface layer side of the second end portion is detachably attached to the back surface layer side of the first end portion when worn. The absorbent article includes a rectangular engaging member arranged on the back surface layer side of the first end portion; and a pair of folding line portions formed on the first end portion and constituting a point where the pair of opposing side portions begin to curve towards the front surface layer side.

The invention discloses a reduction clutch for a washing machine and the washing machine. The reduction clutch comprises an input shaft, an input shaft sleeve, a brake wheel, a reducer, a dewatering shaft, an output shaft, a clutch device and a shell. The input shaft sleeve is installed on the input shaft in a sleeving mode, the dewatering shaft is installed on the output shaft in a sleeving mode, the reducer is installed on an inner cavity of the brake wheel, and the input shaft, the input shaft sleeve, the brake wheel and the output shaft are connected with the reducer. The reducer is a double planetary gear train and comprises a first planetary gear train and a second planetary gear train. The input shaft sleeve and a carrier of the second planetary gear train are connected into one, and the dewatering shaft and the brake wheel are connected into one. When the washing machine is in a washing state, the clutch device brakes the input shaft sleeve and controls the output shaft and the dewatering shaft to rotate reversely in two directions. When the washing machine is in a dewatering state, the clutch device relieves the brake on the input shaft sleeve and controls the output shaft and the dewatering shaft to rotate in the same single direction. The reduction clutch for the washing machine and the washing machine have the advantages that the structure is simple and compact, the manufacturing cost is low, the transmission is safe, reliable and efficient, the service life is long, and the noise is low.

The invention discloses a rice transplanter plastic casing material. The rice transplanter plastic casing material is prepared from, by weight, 3-4 parts of carbon nano tubes, 40-50 parts of thionyl chloride, 3-5 parts of N,N-dimethyl formamide, 100-120 parts of ethidene diamine, 16-20 parts of melamine, 36-40 parts of 35%-37% formaldehyde aqueous solution, 170-200 parts of polyvinyl chloride, 30-40 parts of light calcium carbonate, 18-20 parts of phthalic acid ester, 20-30 parts of 75 wt%-80 wt% sulfuric acid and 30-40 parts of 95 wt%-98 wt% nitric acid. The modified carbon nano tubes, melamine and the formaldehyde aqueous solution are co-polymerized and synthesized into melamine resin, perssad on the surfaces of the modified carbon nano tubes can form hydrogen bonds with amino in the melamine resin and interacts with other polarities, and therefore heat-resisting stability of the composite is improved, and a promotion effect is achieved for improving the structure stability and strength of the finished product.

The invention provides a cloth dyeing machine with symmetrical double spiral cloth grooves. A machine body is provided with a cloth feeding hole, and the two spiral cloth grooves are formed in parallel in the machine body and correspondingly arranged on the two sides of the cloth feeding hole. The cloth dyeing machine is provided with cloth guide pipes, spiral-body cloth sliding plates and a receiving groove; the two cloth guide pipes are close to the adjacent sides, face the front and are opposite right and left and symmetrical, after the spiral-body cloth sliding plates are connected with the cloth guide pipes respectively, cloth moves spirally from up to bottom in the opposite direction, and the cloth is soaked and dyed in the spiral cloth grooves in cycle; the two spiral cloth groovesare opposite and symmetrically arranged in the machine body in parallel, the cloth accommodating space is expanded, the dyed cloth quality and the production efficiency are improved, the low bath ratio can be reached, and energy is saved.

The invention provides a soft-smooth-warming home-textile blanket fabric and a production method thereof. The production method includes the steps that compact spinning Meiyabi is selected as a warp-yarn raw material, a bamboo fiber is selected as a weft-yarn raw material, the materials are subjected to opening picking, cotton carding, drawing, roving, yarn spinning and spooling respectively, andwarp yarn and weft yarn are obtained; the warp yarn and the weft yarn are subjected to spool bleaching and dyeing respectively, wherein the warp yarn is subjected to base yarn treating, slack spooling, bleaching and dyeing, slack drying, tight spooling and color yarn warping, and the weft yarn is subjected to base yarn treating, slack spooling, bleaching and dyeing, slack drying and tight spooling; weaving is carried out, wherein warping, slashing, drafting, weaving and finishing are carried out; after-finishing is carried out, wherein cloth-unfolding seam allowance, singeing, desizing refining, PH washing, shaping and preshrinking are carried out. The fabric prepared with the method has the good soft-smooth-warming property, light-thin property, antibacterial property, glossiness, humidity-absorbing and air-permeability property, anti-wrinkle property and drapability, and also has the certain pilling resistance.

The invention discloses a nylon blended plastic casing material. The material is prepared from raw materials in parts by weight as follows: 16-20 parts of melamine, 100-120 parts of ethylenediamine, 5-7 parts of polyisoprene, 1-2 parts of sodium potassium tartrate tetrahydrate, 3-4 parts of carbon nanotubes, 40-50 parts of thionyl chloride, 3-5 parts of N,N-dimethylformamide, 160-210 parts of polyvinyl chloride, 20-30 parts of 75wt%-80wt% sulfuric acid, 30-40 parts of 95wt%-98wt% nitric acid, 40-50 parts of nylon PA66, 10-13 parts of dioctyl sebacate, 3-4 parts of lauryl mercaptan, 6-10 parts of polyamide wax micro-powder, 30-40 parts of quartz sand and 36-40 parts of a 35%-37% formalin. According to a plastic casing, polyvinyl chloride and nylon are blended, so that the surface hardness, resistance, waterproof performance and acid and alkali resistance of the finished casing product are further improved.

The invention discloses a telescopic arm internally provided with three hydraulic cylinders and used for a lorry-mounted crane. The telescopic arm comprises a basic arm body, five joints of telescopic arm bodies, the three telescopic oil cylinders, a telescoping inhaul cable, a contracting inhaul cable, a rope row and a movable pulley. The five joints of telescopic arm bodies are sleeved with the basic arm body. The first telescopic oil cylinder, the second telescopic oil cylinder and the third telescopic oil cylinder are arranged in the five joints of telescopic arm bodies from top to bottom in the longitudinal direction. Telescoping of the first-joint telescopic arm body, the second-joint telescopic arm body and the third-joint telescopic arm body is controlled by the telescoping actions of the first telescopic oil cylinder, the second telescopic oil cylinder and the third telescopic oil cylinder respectively. By means of cooperation of the third telescopic oil cylinder, the telescoping inhaul cable, the contracting inhaul cable, the rope row and the movable pulley, a telescoping mechanism with the oil cylinders provided with the multiple sets of inhaul cables is formed, the fourth-joint telescopic arm body and the fifth-joint telescopic arm body are controlled by telescoping of the third-joint telescopic arm body, and synchronous telescoping with the third-joint telescopic arm body is guaranteed. The telescopic arm has the beneficial effects that the structure is simple and compact, the telescoping work efficiency of the arm bodies is improved, the work intensity is lowered, the load telescoping capability and the lazy arm telescoping reliability of a middle-long-amplitude lazy arm are obviously improved, and the overall service life is obviously prolonged.

The invention particularly relates to a rotary threshing device with an inner roller and an outer roller for coarse cereal crops. The problems that when an existing threshing device threshes the coarse cereal crops, grains are seriously damaged, and cleaning is difficult are solved. A top cover with the arc-shaped inner wall is arranged at the top end of a box type rack, a feeding opening is formed in the lower portion of the front end of the box type rack, a main shaft penetrating through the front side wall and the rear side wall of the box type rack is arranged on the box type rack, a spiral feeding device, a rasp bar threshing roller and a spike tooth threshing roller are fixed to the main shaft, a grid roller eccentric with the rasp bar threshing roller up and down is arranged outsidethe rasp bar threshing roller, supporting wheels and friction wheels are arranged on the left side and the right side of the bottom of the grid roller, a transmission shaft is arranged in the centerof the friction wheels, and a speed reduction motor connected with the transmission shaft and fixed to the box type rack is arranged at the rear end of the transmission shaft; and the spiral feeding device comprises a conical barrel with the front side diameter smaller than the rear side diameter, and double spiral blades are arranged on the side wall of the conical barrel. A grain and straw separation process is completed at a time in the rotating process.