32results about How to "Good shock resistance and cushioning performance" patented technology

The invention provides a production method for a cold chain thermal insulation box. After a VIP box of which the top end face is an open face is formed by spicing vips, a box inner mold is placed in the VIP box, and then the VIP box and the box inner mold are placed in a box outer mold; a gap space is formed between the outer wall of the VIP box and the inner wall of the box outer mold, and the box inner mold abuts against the inner wall of the VIP box; then a VIP serves as a VIP cover plate, the VIP cover plate is laid on a cover plate inner mold, and a cover plate outer mold is arranged on the VIP cover plate; a gap space is formed between the VIP cover plate and the cover plate outer mold similarly; EPP or EPS particles are injected into the gap spaces; and high-temperature high-pressure steam is led to the gap spaces, and foaming, adhering and forming of the EPP or EPS particles are completed. The production method is simple in process, the VIP box is formed integrally, machining cost is low, and the yield is high. The invention further provides the cold chain thermal insulation box small in overall weight, and protruding, adhesion failure, deformation and other problems are avoided.

The invention discloses an anti-seismic buffering lightning-proof signal tower device comprising a support pedestal, a support sleeve, an arc-shaped clamp block, a current-limit lightning rod and a signal tower body; a first slide block and a second slide block are respectively horizontally arranged in the support sleeve cavity in a slide mode, and connected via a spring; one end, arranged in thesupport sleeve cavity, of a press rod is fixedly arranged on the second slide block; one end, far away from the support sleeve, of the press rod is fixedly provided with the arc-shaped clamp block. The device uses an adjusting handle to rotate a screw rod, thus pushing the first slide block to move in a direction close to the second slide block in the support sleeve cavity, and keeping the springin a contracted state; the elastic force of the spring enables the concave surface inner wall of the arc-shaped clamp block and the outer wall of the signal tower body to always attach to each other.The anti-seismic buffering lightening-proof signal tower device is good in a support fixing effect; the spring is arranged so as to provide an excellent anti-seismic buffering effect for the vibrations formed by the signal tower body, thus prolonging the signal tower body service life.

The invention discloses a TPE-base composite film material. The TPE-base composite film material comprises, by weight, 100-120 parts of SEBS, 40-80 parts of PP, 10-30 parts of toughening material, 10-20 parts of cellulose-type adhesive, 3-10 parts of compound stabilizer, 10-30 parts of extending oil, 5-10 parts of paraffin lubricant and 1-2 parts of antioxidant. A TPE-base composite film prepared according to the formula is excellent in elastomeric performance, good in adsorption capacity for rolling core pipes and high in fit performance and can be used for being attached to buffer layers of some high-precision optical films to guarantee that the high-precision optical films are free of creases when wound on the TPE-base composite film.

Provided is a frameless optical energy module. The frameless optical energy module comprises an optical energy converter, the edge of the optical energy converter is sealed by adhesive tape, the adhesive tape comprises a bonding layer with the bonding and buffering function and an ageing resisting protection layer, the bonding layer is used for being in contact with the edge of an article, the bonding layer comprises a base material layer, a freely-selected first glue layer and a freely-selected second glue layer, the first glue layer and the second glue layer are freely selected and are oppositely located on the two sides of the base material layer, and the first glue layer is in contact with the article. The protection layer is arranged on the bonding layer and comprises a freely-selected priming coat on the bonding layer and a film layer on the priming coat or the second glue layer or the base material layer. The invention further provides the adhesive tape and a product made of the module.

The invention provides a multi-layer compound anti-static material and a preparation method thereof. The preparation method comprises the steps of (1) mixing a main material polyethylene, polyolefin modifier, carbon black, foaming agent and auxiliary materials and then pelletizing, extruding a master batch through a single screw to obtain sheets, radiating the sheets through an electron accelerator, and finally, foaming the sheets through a foam furnace to obtain polyethylene anti-static foam; (2) covering a layer of conductive membrane at one side of the polyethylene anti-static foam througha coating extruder; and (3) laminating the other side of the anti-static foam with anti-static matrix gum, so as to obtain the multi-layer compound anti-static material (the anti-static foam is in themiddle layer). The compound material has good surface texture, is anti-slide, is wear-resistant, dissolves no dust, has stable anti-static performance, has thermal insulation performance and sound insulation performance, has good buffering performance, and is easy to shape, thereby being suitable for wide use in fields like turnover and package of electronic devices.

The invention belongs to the technical field of polyurethane materials, and specifically relates to a composition for polyurethane boxing glove filler and a preparation method of the composition. The composition for the polyurethane boxing glove filler is prepared from a component A and a component B, wherein the component A is prepared from slow-rebound polyether polyol, polyurea polyol, high activity polyether polyol, a chain extender, a foam stabilizer, a foaming agent, a catalyst, an antioxidant, a light stabilizer and a solid filler; the component B is prepared from polyether polyol, isocyanate and a storage stabilizer. According to the composition for the polyurethane boxing glove filler, the all-water-blown formula design is performed, so that the ozone depletion potential ODP is zero, the prepared composition is nontoxic and protects the environment and is an environmentally-friendly material; the prepared polyurethane boxing glove products are outstanding in knock resisting and buffering performance and high in bearing rebound capacity, and therefore, the wrist and fingers can be prevented from being injured during boxing.

The invention relates to a torsion rubber core. The torsion rubber core comprises a torsion rubber core shaft, a rubber cushion, an adapter sleeve and an elastic sheet arranged on the torsion rubber core shaft in a sleeved mode; a supporting part is formed in the elastic sheet, the rubber cushion comprises a first rubber cushion and a second rubber cushion arranged on two sides of the supporting part respectively, two end faces of the first rubber cushion are provided with a first pressing face and a first supporting face in the axial direction respectively, two end faces of the second rubber cushion are provided with a second pressing face and a second supporting face in the axial direction respectively, the first supporting face and the second supporting face are pressed on the supporting part in an abut against mode correspondingly, and the torsion rubber core shaft is tightly sleeved with the first rubber cushion and the second rubber cushion. Therefore, by arranging the elastic sheet on the torsion rubber core shaft, the elastic sheet is matched with the first rubber cushion and the second rubber cushion, better damping and buffering functions are played, meanwhile movements of the first rubber cushion and the second rubber cushion can be further limited by the elastic sheet to a certain degree, the stability of the whole rubber cushion is guaranteed, the torsion resistance of the whole torsion rubber core is improved, and meanwhile according to the torsion rubber core, the structure is relatively simple, and the cost is low.

The invention discloses a novel collision steering multistage energy absorption anti-collision beam. The novel collision steering multistage energy absorption anti-collision beam comprises a main driving side anti-collision beam combination, an auxiliary driving side anti-collision beam combination, a connecting spring, a three-section type buffer support, a fixed hinge support, a supporting plate, a supporting connecting rod, a buffer spring, a sleeve, a supporting cross beam, a reset spring and a supporting longitudinal beam. The anti-collision beam combination is divided into a first anti-collision beam and a second anti-collision beam, and the multi-buffering anti-seismic effect can be achieved through the three-level buffering energy absorption structure of the anti-collision beam combination, the three-section type buffer support and the buffer spring; during offset collision, the design system can utilize external collision force to generate force which is perpendicular to the collision direction and horizontally faces the non-collision side to the vehicle body, so that the vehicle head moves towards the non-collision side, head-on collision is relieved to reduce the damagedegree of the vehicle body, and the anti-collision beam combination is reset under the action of the reset spring after collision to prevent secondary collision. According to the design, the absorption of the anti-collision beam system to automobile collision impact energy is improved, the damage of external collision force to an automobile body is reduced, the collision energy absorption rate isimproved, and particularly, the safety level of offset collision of the automobile is improved.

The invention relates to a packing box for numerical control motors. The packing box comprises a base plate (10), an upper box (20) and a buffering filling body, wherein the buffering filling body comprises a bottom positioning mechanism (40), two side buffering mechanisms (50), a front end positioning mechanism (60), a rear end supporting mechanism (70) and a top buffering mechanism (80); and the bottom positioning mechanism (40) is provided with a positioning mechanism (41) for positioning the front end positioning mechanism (60). Through the technical scheme, the novel packing box has high adaptability, can meet the packing requirements of different types of numerical control motors, has a good anti-vibration buffering effect, and fully ensures the safety of the numerical control motors.

The invention relates to the technical field of plastic materials, especially to a high-elasticity plastic material. The high-elasticity plastic material is prepared from the following ingredients (by weight): 35-36.5% of SEBS, 16-20% of paraffin oil, 1.53-1.63% of silicone oil, 10-12% of PP, 6.3-7.3% of EPDM, 4.5-5.2% of POE, 3.3-3.7% of PE, 8-8.8% of TPV, 9.3-10.2% of calcium carbonate, 0.03-0.07% of erucic acid, 0.01-0.02% of a stabilizing agent 1, 0.015-0.025% of a stabilizer, and 0.013-0.017% of a stabilizing agent 2. By filling PP / extending oil / SEBS blends with a toughening filling material, the plastic material has excellent toughness. After mixed with paraffin oil, a synergistic effect can be achieved and the high-elasticity plastic material is endowed with excellent elasticity.

The invention relates to a high-temperature gas cooled reactor primary helium circulator electrical penetration assembly and a machining method thereof. The problem that an existing electrical penetration assembly is poor in sealing performance and the like is solved. The electrical penetration assembly comprises a stainless steel body flange with a cavity. A plurality of through holes axially penetrating through the whole stainless steel body flange are formed in the stainless steel body flange. Conductor assemblies capable of extending out of the two ends of the stainless steel body flange are formed in the through holes in a penetrating mode respectively. Each conductor assembly comprises a metal transmission conductor made of a Kovar alloy material. A ceramic positioning sleeve is sintered on the circumferential outer surface of each metal transmission conductor and connected with the metal transmission conductor to form an integrated structure. The ceramic positioning sleeves are fixedly arranged in the through holes in a brazing mode. The electrical penetration assembly has the advantages of being simple in structure, having good mechanical performance and sealing performance, and being strong in insulating performance and bearing capacity, good in anti-seismic buffering effect, resistant to radiation and ageing, long in service life and high in stability.

The invention relates to the technical field of an insulation part, and especially relates to a novel insulation plate. The novel insulation plate comprises a mainboard, a glass fiber cloth, a foam board and an antistatic layer, wherein the surface and the bottom of the mainboard are provided with the glass fiber cloth, the foam board is arranged between the mainboard and the glass fiber cloth, the glass fiber cloth at the surface of the mainboard is provided with the antistatic layer, and a plate body is externally coated by a layer of vinyl resin. The novel insulation plate is simple, compact and reasonable in structure, convenient and fast to assemble, reliable in connection, good in insulation effect, high in strength and good in high temperature resistance and fireproof performance, can prevent static electricity, at the same time, is good in earthquake resistance effect, prolongs the service life of the insulation plate, and greatly improves the application reliability of the insulation plate, thereby facilitating application and popularization.

The invention belongs to the technical field of nuclear reactor electrical penetrating member equipment, particularly relates to a medium-voltage electrical penetrating member ceramic component and solves the problem that existing electrical penetrating members are low in load bearing capability. The medium-voltage electrical penetrating member ceramic component comprises a cylindrical medium-voltage magnetic member. The medium-voltage electrical penetrating member ceramic component is characterized in that a magnetic member flange sleeves one end of the medium-voltage magnetic member, a buffering connection mechanism enabling the magnetic member flange and the medium-voltage magnetic member is arranged between the peripheral inner side of the magnetic member flange and the peripheral outer side of the same, and a magnetic member clamping seat is inserted at the other end of the medium-voltage magnetic member and fixedly arranged at the end of the medium-voltage magnetic member through a positioning structure. The medium-voltage electrical penetrating member ceramic component has the advantages that the component is simple in structure, parts are high in connecting strength, and the component is good in sealing performance, high in insulativity and pressure bearing capability, good in shock-proof and buffering effect, resistant to radiation and aging and long in service life.

The invention relates to the technical field of automobiles and discloses an automobile protection rod formed by polyethylene blowing and a surface coating method thereof. The automobile protection rod comprises an integrated rod body formed by hollow polyethylene blowing. The rod body is coated with a decoration layer. The surface coating method of the automobile protection rod comprises the steps of (1) surface treatment; (2) priming paint spraying; (3) finishing paint spraying. In the surface treatment step, a flame gun is adopted for carrying out activating treatment on the surface of the rod body, the temperature of a flame treating head of the flame gun is 1000 DEG C, and the moving speed of the flame treating head is 0.1 m / s. By adopting hollow polyethylene blowing formation, the mobility is good, formation is easy, the cost is low, the weight is lighter, the shock resistance and buffer performance is good, the structure is integrated, the number of parts on the rod body is effectively reduced, and the assembly process of the automobile protection rod is simplified. In addition, the rod body undergoes surface treatment in advance, so that the problem that the surface coating performance of polyethylene material is poor is solved, and the automobile protection rod is customizable in appearance and good in surface weather resistance.

The invention discloses a slope foundation pit supporting method. The slope foundation pit supporting method comprises the following steps that S1, the depth of a foundation pit and the position of a slope are determined, holes are drilled in a road surface for many times, the depth of the holes is larger than that of the foundation pit, a reinforcement cage is arranged in each hole, concrete is poured into a concrete pile, and the part, higher than the ground, of the concrete pile is built with the concrete and steel bars; and S2, a foundation pit side slope is excavated through an excavator, soil nails are used for drilling holes in the side slope, the drilled soil nails are connected with spray irrigation concrete through steel bar sheets, and a soil nail wall is manufactured. The problems that an existing slope protection structure is a protection net, but the protection net is large in weight, wide in coverage area and large in gravel cleaning difficulty, falling stones cannot be cleaned out in time, a crown beam or the protection net is in a continuous stress state, large construction accidents are prone to being caused when the protection net is damaged, and therefore, a relatively large safety risk exists when a worker carries out construction at the bottom of the foundation pit are solved.

The invention discloses rubber tyre and relates to the field of rubber tyre. The rubber tyre comprises a tyre main body. A rib layer is arranged on the inner side of the surface of the tyre and inner sides of the two sides of the tyre, the outer side of the surface of the tyre is provided with a concave layer, the rib layer comprises ribs staggered laterally, and the concave layer comprises two longitudinal concave grains and two wave-shaped concave grains, wherein the two wave-shaped concave grains are arranged between the two longitudinal concave grains. The ribs staggered laterally are arranged at joints of the inner bottom surface and the two inner sides so that vehicle wheel wear resistance is improved and a service life is prolonged. The concave grains on the outer bottom surface improve friction between the vehicle wheel and the ground. The rubber tyre has a simple design and a low cost. The rubber tyre is suitable for small vehicles such as trolley, luggage case and baby stroller.

The invention discloses a plant protection unmanned aerial vehicle device with an anti-falling buffer function. The device comprises a cover body, a protective parachute, a single chip microcomputer and a main body; a plant protection liquid storage tank is mounted at the middle position of the bottom end in the main body; a spraying pipe is arranged in the middle of the bottom end in the plant protection liquid storage tank; the spraying pipe longitudinally penetrates through the bottom end of the main body; a flow control valve is mounted on the spraying pipe; storage batteries are installedat the bottom end of the interior of the main body at two ends of the plant protection liquid storage tank, sealing cavities are formed in the bottom end of the interior of the main body on two sidesof the plant protection liquid storage tank, the single-chip microcomputer is installed in the sealing cavity in one side of the plant protection liquid storage tank, and the output end of the flow control valve is electrically connected with the input end of the single-chip microcomputer through a wire. According to the plant protection unmanned aerial vehicle device with the anti-falling bufferfunction, wings, a mounting disc and a flange plate are mounted, so that the device is convenient for workers to disassemble and replace the wings, and the service life of the device is prolonged.

The invention provides a sound-proof insulating board. The sound-proof insulating plate is characterized in that each of the upper and lower surfaces of a foam board is provided with, from interior to exterior, a wood board layer, a glass fiber layer, a carbon fiber layer and a reinforced plastic layer, wherein the foam board is made of flame-retardant foam, and a layer of vinyl resin is coated on the outer surface of each reinforced plastic layer. The sound-proof insulating plate provided by the invention overcomes disadvantages in separate usage of foam and inorganic materials like fiber glass, gives full play to the characteristics of light weight and cheap price of a foamed material, has good sound-proof effect, and inherits the advantage of high strength of an inorganic material composed of glass fiber and the like; and the insulating board prepared from a combination of the materials is light in weight, low in cost, good in insulating properties and excellent in sound-proof effect. The insulating board prepared in the invention is simple, compact and reasonable in structure, convenient and fast to assemble, reliable in connection, good in insulation effect and high in strength, has good high temperature resistance, fire resistance and anti-shock and buffering effect, can prevent generation of static electricity, has prolonged service life and greatly improved reliability in usage and can be easily used and promoted.

The invention relates to the technical field of power supply equipment, in particular to an electric iron tower main material reinforcing device. The electric iron tower main material reinforcing device comprises a main material plate of an L-shaped structure, wherein a plurality of reinforcing inclined plates are mounted and fixed inside the main material plate; sides, close to the main materialplate, of the reinforcing inclined plates are fixedly provided with a plurality of elastic supporting assemblies; the elastic supporting assemblies elastically abuts against two branches of the main material plate; a flower basket bolt is further supported and fixed between adjacent two reinforcing inclined plates; and the two ends of the lower basket bolt are blocked, connected and fixed with thetwo reinforcing inclined plates correspondingly. The electric iron tower main material reinforcing device is good in reinforcing effect, has better anti-seismic buffer effect, is good in environmental suitability, is simple in structure, and improves construction operation efficiency.

The invention discloses an X-ray copper foil coating thickness measuring instrument. The thickness measuring instrument includes several thickness measuring mechanisms and a control cabinet. Each thickness measuring mechanism comprises a fixed support, each fixed support includes an upper cross beam, a stand column and a base, each stand column is vertically installed on one side of the corresponding base, the upper cross beams are vertically installed at the tops of the stand columns, the upper cross beams are parallel to the bases, and the upper cross beams, the stand columns and the bases are connected to form a C-shaped structure, the bottoms of the bases are provided with buffer bases, the bottoms of the buffer bases are provided with pulleys matched with sliding rails, upper slidingrails are arranged on the inner sides of the upper cross beams, lower sliding rails are arranged on the inner sides of the bases, X-ray sources are slidably connected with the upper sliding rails, thelower sliding rails are slidably connected with detectors symmetrical to the X-ray sources, and the thickness measuring mechanisms are connected with the control cabinet. The structure design is novel, thickness measuring mechanisms can be achieved, the instrument has strong operational stability, multi-point measurement of products can be achieved through the thickness measuring mechanisms and the cost is saved.

The invention discloses an anti-shock support for electrical equipment. The anti-shock support comprises a support base, and the support base is composed of upper structural steel, lower structural steel and a pair of bolt bars vertically penetrating through the structural steel. The upper portion of each bolt bar is provided with a plurality of through holes, the portion, above the joint of the support base, of each bolt bar is sleeved with a first auxiliary fixing piece and a second auxiliary fixing piece through adapters, the periphery of each bolt bar is sleeved with a channel steel structure, and the first auxiliary fixing pieces and the second auxiliary fixing pieces are each of a channel steel structure. The center of the upper portion of the support base is provided with a groove, insertion grooves for fixing lock catches are formed in the groove, and pipelines are fixed in the lock catches. The anti-shock support for the electrical equipment is convenient to disassemble and assemble, can be used in a combined mode, is used for assisting in fixing the electrical equipment and special wire pipeline structures, has good anti-shock performance and buffering performance, and can greatly guarantee safe operation of the electrical equipment.

The invention relates to a projection lamp. The projection lamp comprises a casing, wherein a circuit board and a lens assembly are arranged in the casing; the casing comprises a casing front cover and a casing rear cover, the casing front cover comprises a first end cover and an inner side wall integrally arranged with the first end cover, and the casing rear cover comprises a second end cover and an outer side wall integrally arranged with the second end cover; the end part, opposite to the first end cover, of the inner side wall is in a first shape, and a seal washer is arranged between the casing front cover and the casing rear cover and has the first shape; an elastomer is arranged on the inner side wall and deforms inwards to enable the inner side wall to enter the casing rear cover more easily when the casing front cover and the casing rear cover are matched; meanwhile, the seal washer abuts against the inner surface of the second end cover to form a first chamber for mounting the lens assembly and the circuit board.

The invention provides an anti-seismic house foundation. The anti-seismic house foundation comprises a house foundation body, wherein support beam piers are arranged on the left side of the house foundation body and the right side of the house foundation body respectively, and the support beam piers are of stepped structures; the house foundation body is composed of a flat layer and a stepped layer; a plurality of bearing blocks are arranged at the bottom of the house foundation body, and the bearing blocks are cuboid-shaped; flat layer damping pads are arranged between the flat layer and thesupport beam piers, stepped layer damping pads are arranged between the stepped layer and the support beam piers, bearing block damping pads are arranged between every two adjacent bearing blocks, andbearing block damping pads are arranged between the bearing blocks and the support beam piers; and steel plates arranged in the horizontal direction and steel plates arranged in the vertical direction are pre-buried in the support beam piers. The anti-seismic house foundation is scientific and reasonable in design, the damping pads are additionally arranged in the different structures so that thehouse foundation body can make elastic contact with the support beam piers, and therefore the anti-seismic buffering effect is obvious, the stability of the house during the earthquake is good, and the building body is effectively prevented from being damaged.

The invention discloses a TPE-base composite film material. The TPE-base composite film material comprises, by weight, 100-120 parts of SEBS, 40-80 parts of PP, 10-30 parts of toughening material, 10-20 parts of cellulose-type adhesive, 3-10 parts of compound stabilizer, 10-30 parts of extending oil, 5-10 parts of paraffin lubricant and 1-2 parts of antioxidant. A TPE-base composite film prepared according to the formula is excellent in elastomeric performance, good in adsorption capacity for rolling core pipes and high in fit performance and can be used for being attached to buffer layers of some high-precision optical films to guarantee that the high-precision optical films are free of creases when wound on the TPE-base composite film.

The invention provides a portable food detection and sampling auxiliary device which comprises a tank body; an exhaust port is formed in the tank body; a valve component is arranged at the exhaust port; a base is arranged at the lower end of the tank body; the tank body comprises an outer tank body part and an inner tank body part; and the inner tank body part is arranged in the outer tank body part. The portable food detection and sampling auxiliary device is characterized in that the lower end of the outer tank body part is opened; the upper end of the inner tank body part is opened; flexible sealing pieces are arranged in the tank body; and one end of each flexible sealing piece is connected with the upper end of the inner tank body part, the other end thereof is connected with the upper end of the inner side of the outer tank body part. The portable food detection and sampling auxiliary device is good in buffer performance and convenient to carry, is safe and stable, and is suitable for storage and transportation, and a refrigeration source is provided for the refrigeration of samples in the sampling process.

The invention belongs to the technical field of polyurethane materials, and specifically relates to a composition for polyurethane boxing glove filler and a preparation method of the composition. The composition for the polyurethane boxing glove filler is prepared from a component A and a component B, wherein the component A is prepared from slow-rebound polyether polyol, polyurea polyol, high activity polyether polyol, a chain extender, a foam stabilizer, a foaming agent, a catalyst, an antioxidant, a light stabilizer and a solid filler; the component B is prepared from polyether polyol, isocyanate and a storage stabilizer. According to the composition for the polyurethane boxing glove filler, the all-water-blown formula design is performed, so that the ozone depletion potential ODP is zero, the prepared composition is nontoxic and protects the environment and is an environmentally-friendly material; the prepared polyurethane boxing glove products are outstanding in knock resisting and buffering performance and high in bearing rebound capacity, and therefore, the wrist and fingers can be prevented from being injured during boxing.

The invention discloses an anti-fogging headlight material and a preparation method thereof. The material disclosed by the invention comprises the following components in parts by weight: 60-80 partsof polyphenyl ether, 5-20 parts of a flow modifier, 5-15 parts of a flexibilizer, 5-20 parts of an enhancer, 1-5 parts of an interfacial modifier, 1-10 parts of a drying neutralizer and 0.5-2 parts ofother additives. The invention further discloses a preparation method of the anti-fogging headlight material. The material disclosed by the invention solves the headlight fogging problem, and has thecharacteristic of low material dispersion property. In addition, the anti-fogging headlight material disclosed by the invention further has moisture resistance and high rigidity, and the requirementthat the lamp assembly is not influenced by strong vibration is met. Furthermore, due to good flowability of the material, the requirement that the thickness of the parts of the headlight assembly isreduced can be met, and the manufacturing cost is reduced. The product further has the characteristics such as light weight, excellent dimensional stability, short molding cycle, high finished productyield and the like.

The invention provides a fresh food heat preservation box. The fresh food heat preservation box comprises a shell, a heat preservation box body and a storage drawer. A sealing cover is arranged on thefront side of the shell, and rollers are arranged at the bottom of the shell. The heat preservation box body is composed of extrusion type polystyrene and a vacuum insulation plate, wherein the vacuum insulation plate is arranged on the inner side of the extrusion type polystyrene. A refrigerant filling opening which is detachable is formed in the bottom end of the heat preservation box body. Thestorage drawer is made of plastic, and the inside of the storage drawer is coated with an activated carbon adsorption layer. The fresh food heat preservation box has the beneficial effects that the box body is thin in the thickness, light in the weight, good in the heat preservation effect, good in the shock resistance and buffering performances, antibacterial and bacteriostatic and convenient tomove, disassemble and wash.