283results about How to "Reduce vibration intensity" patented technology

A drumhead tone control device employs an annular configuration of polyester film tightly adhered to the periphery of a drumhead membrane. The annular configuration of the tone control device includes radial and / or circumferential relief. The relieved tone control device disrupts transmission of vibrations reflected from the drumhead membrane / drum shell interface. Disruption of reflected vibrations improves the overall tonal quality of the drumhead while use of a tightly adhered polyester sheet close to the periphery of the drumhead playing surface minimizes undesirable alteration of the attack characteristics and fundamental tone of the drumhead.

The invention relates to a high-speed carton molding machine. The high-speed carton molding machine comprises a mainframe part, a pusher part and a stacking supply part; the mainframe part comprises a cut paper transporting component, an unpacking molding component, a box retaining and positioning component, a gelatinization component, an outer foldout component, a box discharging and dropping component, a box pressing and molding component relatively arranged at one side and an upper box poking and adjusting component; the box pressing and molding component comprises two small circulating guide rails in parallel arrangement, a circulating transmission chain, a sliding guide rail, a box pressing component and a large circulating guide rail; the sliding guide rail is vertically arranged between two small circulating guide rails and is connected with the circulating transmission chain; two ends of the sliding guide rail are connected with tracks of two small circulating guide rails through slide blocks respectively; the bottom end of the box pressing component is arranged on the sliding guide rail through a sliding sleeve; the upper side of the box pressing component is connected with a track of the large circulating guide rail through an idler wheel; and the large circulating guide rail is provided with a section of a bended convex track. The high-speed carton molding machine has a compact structure, high carton molding speed, small vibrating strength and noise and large carton storage capacity.

The invention relates to a self-adaptive vibration accumulation and energy supply high-efficiency vertical roller mill which comprises a hydraulic transmission system, an intelligent control system, a stand (1), a transmission device (2) and a speed reducing mechanism (6), wherein the transmission device (2) and the speed reducing mechanism (6) are arranged on the stand (1); an output end of the speed reducing mechanism (6) is provided with a grinding table device (15); an air ring (8) is arranged at the excircle of the grinding table device (15) and at an upper opening of an air inlet duct (7) communicated with an air inlet pipe (5); a plurality of grinding roller devices (10) are arranged above the grinding table device (15) by a mill door arranged on a lower shell (11); a rocker arm (9) is arranged at the outer ends of the grinding roller devices (10); one ends of a pressurizing oil cylinder (3) and a magnetic fluid damping adjustment device (4) are respectively connected with the rocker arm (9), and the other ends of the pressurizing oil cylinder (3) and the magnetic liquid damping adjustment device (4) are respectively connected with the stand (1); the upper end of a middle shell (14) is provided with a powder concentrator (12). The self-adaptive vibration accumulation and energy supply high-efficiency vertical roller mill has the advantages that the extrusion energy and the impact energy are efficiently utilized, the vibration intensity of a grinding host machine can be reduced, the grinding efficiency is improved, the grinding energy consumption is reduced, the stability of equipment is improved, the service life of the equipment is prolonged, and the running cost is lowered.

The invention discloses a device for producing coarse titanium tetrachloride by low-temperature fluidizing chlorination. The device comprises a furnace top, a furnace body and a furnace bottom, wherein the furnace bottom is provided with a gas distributor which is communicated with a gas inlet pipe and comprises a chassis and a plurality of gas nozzles uniformly distributed on the chassis; a gas outlet of each gas nozzle is upward; the furnace body is in a straight cylinder shape; the side wall of the furnace body is provided with a charging opening and a slag discharging opening; the charging opening is positioned at the bottom of the furnace body and is arranged opposite to the slag discharging opening; the arrangement position of the slag discharging opening is higher than that of the charging opening; and the vertical distance of the slag discharging opening to the charging opening is 1.2-2.2m. With the adoption of the device, production large scale is easily realized, static pressure and diffusion resistance in the furnace are reduced, the vibration strength of the furnace body is reduced; reverse backmixing of the gas is inhibited, the mass transfer and heat transfer rate are improved, the contact time and contact surface of carbide slag and chlorine are ensured, the transformation rate of TiC is improved; and the device is beneficial to continuous operation of a chlorination furnace and is convenient in manufacturing, transformation and maintenance compared with the traditional chlorination furnace.

The invention relates to a shock absorption structure of a diaphragm booster pump. According to the shock absorption structure, an arc-shaped groove is downwardly and concavely formed in the position, on the periphery of each actuation perforation hole, of the top surface of a pump head base in the diaphragm booster pump, an arc-shaped bump is downwardly and convexly arranged at the position, corresponding to each arc-shaped groove, of the bottom surface of a diaphragm, and after the bottom surface of the diaphragm is attached to the top surface of the pump head base, each arc-shaped bump of the bottom surface of the diaphragm is completely embedded in the corresponding arc-shaped groove of the top surface of the pump head base. Small moment arm length is achieved between the arc-shaped bumps of the bottom surface of the diaphragm and a positioning convex ring, so that the torque generated by multiplying acting force obtained when wobblers push the bottom surface of the diaphragm upwards by the small moment arm length becomes small, and the strength of shock generated when the diaphragm booster pump is actuated is substantially reduced.

The invention relates to a medical rehabilitation training instrument. An upper-limb rehabilitation training robot solves the problems that existing equipment is complex in structure and hand joints cannot move comprehensively. The upper-limb rehabilitation training robot comprises a base (1), a support frame (3), a seat (2), a cantilever beam (4) and an upper limb training mechanism, wherein the upper limb training mechanism comprises a shoulder joint expanding and shrinking mechanism, an arm bending and stretching mechanism, a shoulder joint internal and external rotating mechanism connected and fixed with rotary rods (17 and 18), a front arm forward and backward rotating mechanism the same as the shoulder joint internal and external rotating mechanism, an elbow joint expanding mechanism fixedly connected with the shoulder joint internal and external rotating mechanism and the front arm forward and backward rotating mechanism through two pairs of rotating blocks (32 and 41), and a hand expanding mechanism fixedly connected with the shoulder joint internal and external rotating mechanism through slide bars (44 and 45). The upper-limb rehabilitation training robot is simple to operate and enables the joints to move comprehensively.

The invention discloses an active and passive integrated vibration isolation device and a vibration isolation platform. The vibration isolation device comprises an elastic plane net structure, an active electromagnetic dynamic vibration absorber, and a piezoelectric stack actuator. The elastic plane net structure is formed by weaving steel wires in a tensioning and crossed manner. The active electromagnetic dynamic vibration absorber is arranged on the intersection of a central region of the elastic plane net structure. The piezoelectric stack actuator is arranged on the edge position of the elastic plane net structure. The vibration isolation platform comprises the vibration isolation device, a bearing cylinder, an intermediate support, and a control system. A satellite attitude control device assembly is arranged on the intermediate support. The intermediate support is installed on the vibration isolation device. The vibration isolation device is installed on the inner side of the bearing cylinder. The control system is used to control the active electromagnetic dynamic vibration absorber according to vibration acceleration information of the intermediate support, and control the piezoelectric stack actuator according to the vibration acceleration information of the bearing cylinder. The vibration isolation device and the vibration isolation platform are effective for low-frequency line spectrum, and have good control effect on broadband random excitation.

The invention discloses a deepwater semi-submersible platform type wind power plant which comprises a plurality of wind turbines, a deepwater semi-submersible platform used for supporting wind turbines and a hanging chain type anchoring mechanism, wherein the anchoring mechanism is used for anchoring the deepwater semi-submersible platform at the bottom of the sea; the deepwater semi-submersible platform comprises a deck platform, a tuned liquid column damper device and a underwater buoyancy tank, wherein the tuned liquid column damper device is arranged inside the deck platform; the deck platform is connected with the underwater buoyancy tank through a stand column; the bottom of the underwater buoyancy tank is connected with the hanging chain type anchoring mechanism. Aiming at the existing wind power plant frequency fixed defect, the seakeeping of the wind motor system in heavy storm wave can be greatly improved, the vibration strength of the wind motor system local component is greatly reduced, and the economical efficiency of the wind motor system is greatly improved.

The invention discloses an efficient damping device for mechanical equipment. The efficient damping device comprises a fixing plate and a fixing base, a fixing block is welded to the middle position of the top of the fixing base, a hydraulic driver is arranged at the middle position of the top of the fixing block, the top of the hydraulic driver is connected with the fixing plate through a stretchable rod, the tops of the fixing block are located on the two sides of the hydraulic driver and are connected with the fixing plate through second damping springs, and three sets of connecting rods are welded to the outer side of the fixing block at equal intervals. According to the efficient damping device, the bottom of a containing plate is connected with the fixing plate through a first damping spring, magnet blocks are arranged at the bottom of the containing plate and the top of the fixing plate, magnetic poles of the magnet blocks are opposite, meanwhile, the bottom of the fixing plateis connected with the fixing plate through the second damping springs, the damping effect is better due to multiple damping, the object vibration strength is reduced, and damage to objects and loadersis prevented.

The invention discloses a bean curd machine, aiming at providing a bean curd machine which is simple in structure, is low in cost and is safe and healthy. The bean curd machine comprises a container and a waste water chamber, the bottom of the container is provided with a filtering hole, the filtering hole is provided with a filtering screen I, and the container is also provided with a vibration motor. The invention discloses a bean curd machine which has simple structure, low cost, high safety and healthy and high bean curd yield and can produce high-quality bean curds.

The invention relates to car with adjustable wheelbase, of which the distance of fore-and-aft wheel can be adjusted by driver proactively. The invention is especially adept to four-wheel electric automobile. The mobile comprises car body, power system, running system and control system. Said running system, which possesses regulating mechanism of wheel base to adjust distance of fore-and-aft wheels, comprises front dowel steel, rear dowel steel, wheel base of regulating lead screw, sliding nut, motor of wheel base regulating and sliding beam. Motor of wheelbase regulating drives connects with wheelbase of regulating lead screw via gear engagement. The front of sliding beam connects with adjustable shelf, the top connects with car frame via damping spring and the under-part set a supporting beard, in which supporting roll covered in back beam is inbuilt. The invention can enhance initial starting accelerating, climbing, cross-country and balancing performance and has the properties of rationalized carrying and actuating approach, high brake performance and high reliability.

The invention discloses a Liftable fodder trough for pig raising. The fodder trough comprises a shell body, wherein a supporting base is firmly connected to the bottom of the left side of the shell body; a fodder block is disposed on the top part of the supporting base; a fodder trough is formed in the top part of the fodder block; a lifting plate is firmly connected to the right side of the fodder trough; an opening is formed in the left side of the shell body; a fixation plate is firmly connected to the left side of the inner cavity of the shell body; a through hole is formed inside the fixation plate; and the end of the lifting plate remote from the fodder block successively passes through the opening and through hole and extends to the inner cavity of the shell body. According to the invention, the lifting plate, the opening, the fixation plate, the through hole, a roller block, a roller, a lifting rod, a gear plate, a separation plate, a lifting hole, a motor and a gear are disposed, so that the height of the doffer block can be adjusted easily; operations are simple; use is convenient; the height of the fodder block can be adjusted correspondingly according to the height of pig individuals; and normal eating of all the pigs can be ensured, and normal development of the pigs is guaranteed.

The invention discloses a shock absorption device of electromechanical equipment. The shock absorption device comprises a base. Supporting pads are arranged at the four corners of the bottom of the base. Telescopic rods are arranged on the two sides of the upper surface of the base. A mounting plate is arranged at the top ends of the telescopic rods. The two sides of the upper surface of the mounting plate are movably connected with limiting plates. A connecting plate is arranged at the middle position of the bottom of the mounting plate. The two sides of the connecting plate are rotationallyconnected with connecting rods through rotating shafts. The bottoms of the connecting rods are rotationally connected with moving rods through the rotating shafts. According to the shock absorption device, through cooperation between the mounting plate and the limiting plates, the shock absorption device can achieve adjusting conveniently according to the size of the bottom of the electromechanical equipment, and therefore the device is suitable for mounting of different sizes of electromechanical equipment; and through cooperation between arranged fixed bocks and kidney-shaped holes, the limiting plates can be fixed conveniently, and therefore the electromechanical equipment is fixed firmly, the electromechanical equipment is prevented from greatly shaking in the work process, and the stability of the electromechanical equipment is improved.

The invention relates to a vibration absorption refrigeration energy absorber, which is characterized by: working media is refrigerant, in the storage cylinder and the cylinder between the storage area, an increase in pipeline, storage cylinder and set up the first a one-way valve, the second one-way valve, respectively, two one-way valves and automotive air-conditioning compressor with high and low pressure ports connect the upper and lower vibration motor vehicles, the continuous movement, vibration energy conversion for refrigeration energy, to reduce Automotive air-conditioning compressor power energy-saving purposes, at the same time reduce vehicle moving in the vibration intensity purposes.

The invention discloses an energy-saving air filter. The energy-saving air filter comprises a filter main body, an air inlet and an anti-vibration pad, wherein the middle part of the top of the filtermain body is fixedly connected to a hydraulic tank, one end of the filter main body is fixedly connected to a motor storage chamber, the bottom of the filter main body is fixedly connected to a clamping groove, the other end of the filter main body is connected with an air outlet in an embedded mode, and one side of the top end of the filter body is connected with an air inlet in an embedded mode; an electrode device inside the air inlet can perform electrostatic dust collection, so that the inventiveness of the device is improved; the utilization of steam inside the hydraulic tank further adsorb dust, so that the usability and the energy-saving performance of the device are improved; the anti-vibration pad can reduce the vibration of the device, so that the service life of the device isprolonged; a condenser pipe can liquefy the steam, so that the energy-saving performance of the device is improved; an exhaust fan can enable air enter an air outlet better, so that the inventivenessof the device is improved; and the use of the air filter is suitable, and the energy-saving air filter has a wide development prospect in the future.

The invention discloses a mobile terminal. The mobile terminal includes a detection module used for detecting using state information of the mobile terminal, a confirmation module used for confirming usage scenarios of the mobile terminal according to the using state information, and a processing module used for adjusting prompt modes according to the usage scenarios of the mobile terminal. The invention further discloses a prompt adjusting method. According to the invention, the using state information of the mobile terminal is detected, and the prompt modes of the mobile terminal are adjusted according to the using state information, prompt ringtones of the mobile terminal are reduced or the vibration intensity of the mobile terminal is reduced or the silent mode is started when a user operates the mobile terminal or watches the mobile terminal, so that the disturbance of prompt tones for the user can be reduced to improve the user experience.

A method of controlling vibration is provided. The method includes determining whether the electronic device is located on a flat surface if a vibration event of an electronic device occurs, measuring a first noise signal level before driving a vibration motor by using a microphone of the electronic device if the electronic device is located on the flat surface, measuring a second noise signal level after driving the vibration motor at a minimum vibration intensity, and controlling a driving intensity of the vibration motor by comparing the first noise signal level and the second noise signal level. Accordingly, an excessive noise may be avoided if a portable terminal vibrates on a hard surface such as a desk.

The invention discloses a rotor punching piece manufacturing process and relates to a punching process. The process roughly comprises: firstly, punching a shaft hole on a plate-shaped silicon steel sheet; then, punching a coil groove with the shaft hole as a reference; punching a stator punching piece outer circumference with the shaft hole as a reference; cutting off a rotor punch piece from thestator punch piece with the shaft hole as a reference; and subjecting the stator and rotor punching pieces to correction, insulation varnish painting, and insulation detection, and assembling the rotor punching piece if qualified. The method has the following advantages and effects that the processing method of punching the shaft hole first and then punching with the shaft hole as a reference canreduce the offset of the punching piece during the processing, improves the machining accuracy of the stator and rotor punching pieces, reduces the eccentric inertia of the rotor at the start of the motor, thereby achieving a purpose of reducing the vibration strength during the start process of the motor.

The invention discloses a vibrating equal-thickness flip-flow screen for multi-plastid activation. The flip-flow screen comprises an outer screen frame, a flip-flow body, an excitation device, a supporting frame, a T-shaped vibration isolation spring device and a screen plate, and the flip-flow body is fixedly arranged between two side plates of the outer screen frame to form a screen box; the excitation device is connected to the side face of the screen box through a main vibration spring; and the supporting frame and the outer screen frame are connected through the T-shaped vibration isolation spring device. The vibrating equal-thickness flip-flow screen for multi-plastid activation has the advantage that multi-plastid transverse vibration (which is beneficial to activating materials), equal-thickness screening and screen surface relaxation are achieved. The flip-flow screen only has transverse shearing dynamic load to the ground, a special vibration mode has a transverse activationeffect on materials, and the screening efficiency is high. The flip-flow screen surface makes the materials jump, and the hole blocking phenomenon is effectively eliminated. A motor is connected witha vibrating plastid small in amplitude, and the function of protecting the motor is achieved. The vibrating plastid and the screen box are flexibly connected through a plurality of sets of springs, sothat the stress of the whole structure is more reasonable.

The invention discloses a preparation method of ceramic clay, which belongs to the technical field of ceramic production. The preparation method comprises the following steps: stirring and mixing thefollowing raw materials in parts by weight: 20 to 30 parts of preprocessed kaolin powder, 10 to 20 parts of flaky graphene oxide, 20 to 30 parts of coconut charcoal fibers, 20 to 30 parts of calciclase powder, 40 to 50 parts of clay, 20 to 30 parts of preprocessed quartz powder, 8 to 10 parts of urea, 8 to 10 parts of calcium nitrate solution, 10 to 20 parts of N'-cetyl-N,N-dimethyl ethyl amidinesolution, 10 to 20 parts of hexadecane, 10 to 20 parts of vegetable essential oil, 20 to 30 parts of modified additives and 60 to 80 parts of bacillus pasteurella bacteria solution at a constant temperature, and obtaining a primary processed mixture; stirring and mixing alkaline phenolic resin and the primary processed mixture according to a weight ratio of (1 to 10):(1 to 20), and obtaining a secondary processed mixture; and introducing argon into the secondary processed mixture, heating stirring, and mixing, thus obtaining the ceramic clay. The ceramic clay prepared according to the technical scheme of the invention has the characteristics of excellent plasticity and water corrosion resistance.

The invention relates to an environment-friendly nano-silver bacteriostatic compound, and belongs to the technical field of antibacterial agents. Nano-copper powder as a raw material cooperates with epoxy resin to be used as a bacteriostatic carrier, the bacteriostatic effect can be fully played and good biodegradability is achieved; with sodium alginate as a reducing agent and a stabilizing agent, an AgNO3 solution is irradiated by ultraviolet light to prepare the nano-silver and silver compound, so the compound gives full play to a bacteriostatic effect, and has high biodegradability; addedmicrocrystalline paraffin wax can carry nano-silver in the system to float upward to the surface of the system during preparation, a water-inhibiting bacteriostatic layer is formed on the product surface, and the plasticity of the bacteriostatic compound system can be improved; in the subsequent preparation process, plant essential oil can occupy the positions of a part of functional groups in thecross-linking network of a composite matrix and chitosan, reduces the vibration intensity of covalent bonds in the cross-linking network molecules, plays a multi-level bacteriostatic effect, and hasno secondary pollution. The problems that the commonly used bacteriostatic agent can cause secondary pollution and has poor bacteriostatic effect in the use process are solved.

The invention relates to a nonmotile driven refrigerating vibration absorber, which comprises an oil storage cylinder, a working cylinder, a floating piston, a spring A, a spring B, an upper end cover, a middle end cover, a lower end cover, a sealing component, a dust cover, a piston, a piston rod, a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a first damping hole, a second damping hole, a third damping hole, a fourth damping hole, and a fifth damping hole, which are connected in sequence. The vibration absorber is characterized in that the floating piston, the middle end cover, the spring A, the spring B, the oil storage cylinder and the working cylinder are arranged coaxially. The vibration absorber converts energy generated by the vibration of an automobile into refrigerating energy, saves energy through shutting up an air-conditioning compressor of the automobile, and reduces vibration strength of the automobile at the same time.

A method of adjusting an event prompt degree and a mobile electronic device and a computer program product using the same are provided. In the present method, whether at least two detection regions of the mobile electronic device simultaneously detect a touch when the mobile electronic device executes a vibration prompt corresponding to an event is determined, wherein the detection regions are independent of each other. A vibration intensity of the vibration prompt is reduced when the detection regions simultaneously detect the touch. Thereby, continuous vibration prompt is prevented from bothering other people.

The invention discloses a novel sea water desalinization evaporator, which comprises a steam inlet device, a sea water spraying device, an evaporator shell, a steam demister, a sea water inlet device, a fresh water collection outlet device, a strong brine outlet device, a heat exchange pipe bundle, a pipe plate, an internal bracket, an outer support seat and an external reinforcing bracket, wherein the evaporator shell is formed by connecting a plurality of shells of effect evaporators by welding; anticorrosive coatings are coated on the inner walls of the evaporator shells and welding seams between two adjacent evaporator shells; the heat exchange tube bundle and a rubber ring for a tube plate are elastically sealed and connected; and the tube plate is fixed on the internal bracket. The invention has the beneficial effects that the cost of the shells is reduced by over 50 percent; an integral welding structure solves the problem that the connecting parts among the effect evaporators is leaked; and the heat exchange tube bundle and the tube plate are elastically connected by using a rubber sealing ring, thereby not only avoiding the problem that the connecting part is leaked, but also reducing the vibration strength of the heat exchange during use and improving the reliability and the service life of the equipment.

The invention discloses a method for preparing a silk fibroin sodium alginate composite fiber and belongs to the technical field of natural macromolecule composite materials. The method comprises thefollowing steps: firstly, mixing, stirring and dissolving silk fibroin with water, performing dialysis, and performing centrifugal separation so as to obtain a pretreated silk fibroin solution; mixingelastinase and the pretreated silk fibroin solution, adjusting the pH value, and performing constant-temperature stirring enzymolysis so as to obtain enzymatic hydrolysate; mixing phospholipid with the enzymatic hydrolysate, performing ultrasonic dispersion, further adding sodium alginate, plant essential oil and monosaccharide, performing a constant-temperature stirring reaction so as to obtaina reaction liquid, mixing the reaction liquid with Carbomer, performing a constant-temperature stirring reaction so as to obtain a spinning solution, performing vacuum defoaming, spinning, washing with water, and performing traction, coiling and drying, thereby obtaining the silk fibroin sodium alginate composite fiber. The silk fibroin sodium alginate composite fiber prepared by using the methodhas good mechanical properties.

A method for optimizing vibration damping structure of full-face hard rock roadheader includes such steps as selecting sandwich material of high polymer sandwich damping damping steel plate, mixing that sandwich material with the high polymer sandwich damping steel plate to obtain the sandwich material of high polymer sandwich damping damping steel plate. Determining the structure and size of polymer sandwich damping steel plate; The dynamic model of the cutter head of the full-face hard rock roadheader is established. Determining the equivalent stiffness and damping of each subsystem; External excitation of computational model; 6) calculating that energy consumption of rock breaking, the vibration energy dissipation and the rock break volume of the whole machine, calculating and evaluating the dynamic specific energy of the tunneling performance of the hard rock roadheader, and characterizing the vibration level of the hard rock roadheader by the acceleration mean value in unit time.The present invention takes into account the drawbacks of existing methods for modifying component connection modes and replacing component materials, A structural vibration reduction method is proposed, which can reduce the vibration intensity of the main engine of the full-face hard rock boring machine under the requirements of safety and strength, thereby reducing the damage degree of the mainengine parts of the full-face hard rock boring machine, improving the tunnel construction efficiency and greatly accelerating the construction progress of the boring project.

Disclosed is a vibration apparatus for generating vibration in a mobile terminal. The apparatus includes a vibrator for generating vibration; a frequency generator for generating a driving signal having a frequency within a predetermined frequency range in a predetermined time period; a driver for driving the vibrator using the driving signal provided from the frequency generator; and a frequency controller for periodically varying a frequency of the driving signal within the frequency range. Further, the vibration apparatus includes a vibration measurer for measuring vibration generated by the vibrator and providing the measured vibration values to the frequency controller. The frequency controller updates a frequency of the driving signal for driving the vibrator at a frequency indicating a maximum vibration value according to the measured vibration values.

The inventive cruciform stern control surfaces of an undersea vehicle comprise horizontal projected parts(1) and vertical top and lower projected parts (2), i.e., stabilising fins, with fixed foreparts and movable tail parts, wherein a semi-ring (6) is mounted on the fixed foreparts of the horizontal stabilising fins (1) and the top vertical stabilising fin (2), which semi-ring (6) has a wing-shaped cross-section with variable chord lengths and the steering angles of sections along the perimeter of the semi-ring (6), wherein the steering angles are selected according to the local attack angles of the inflow and the radius of sections where said semi-ring (6) is mounted on the stabilising fins (1, 2) is equal to 1.2-1.3 of the radius of the undersea vehicle hull (3) in the area where the semi-ring (6) is mounted.

The invention discloses fruit preservative paper, and belongs to the field of paper products. A preparation method of the fruit preservative paper comprises the following steps: mixing and stirring ethyl cellulose, inorganic powder and composite modified chitosan in a reaction kettle for 1-2 h at the temperature of 40-55 DEG C, then cooling to the temperature of 20-25 DEG C, adding a plasticizer,a spinach composite extracting solution and polylysine and mixing, and stirring for 40-60 min at 300-350 r / min to obtain a preservative coating; spraying one side of a single piece of wood pulp raw paper with the preservative coating; standing for 5-10 min; secondarily spraying the same side of the wood pulp raw paper with the preservative coating; standing for 5-10 min; and drying to obtain the fruit preservative paper. The problems that existing fruit preservative paper is short in function acting time, and the preservative effect is not remarkable are solved.