35results about How to "Reduce damage loss" patented technology

The invention discloses a manufacturing method for extracting and processing fresh juice stock solution by using dendrobium officinale as a raw material. The method furthest protect the color, flavor, nutrition and effective ingredients of dendrobium officinale fresh juice by surface sterilization of the collected fresh dendrobium officinale and technology of juicing, enzymolysis, vacuum degasification, micro-filtration, ultra-filtration, sterile filling, high-temperature instantaneous sterilization and the like, and meanwhile, the product is favorable for storing and realizing industrialized production. The dendrobium officinale is processed into the dendrobium officinale fresh juice stock solution which is easy to store, convenient to carry, simple to administrate, good in mouthfeel and easy to absorb and has health-care nutritional components and medicinal functions; the fresh juice stock solution does not contain any additive; and the content of the fresh juice stock solution reaches over 99 percent. The dendrobium officinale fresh juice stock solution can be administrated separately, also can be added into mineral water to form health-care beverage, also can be dissolved into wine to form nourishing health-care wine, and can be added into high-grade dishes to form nourishing dishes for eating.

The invention provides a production method of instant edible bird's nest, and an eating method of instant edible bird's nest produced by using the production method. Sialic acid loss during the process of edible bird's nest can be reduced, the nutrients of the edible bird's nest can be kept, the obtained instant bird's nest product can be eaten after being rehydrated with normal-temperature water or drink, and the good mouthfeeling of the similar traditional high-temperature cooked bird's nest product can be obtained. The production method comprises the following steps: A. pretreating the nest and removing impurities; B. steaming or decocting the impurity-removal bird's nest at the temperature of not exceeding 100 DEG C; C. placing the steamed or decocted bird's nest into a closed container, stirring and pressurizing so as to foam and expand the bird's nest to obtain semi-finished bird's nest product, and subpackaging; and D. performing quick-speed dry-freezing to the subpackaged semi-finished bird's nest product through freezing equipment, to obtain finished instant bird's nest product. The eating method of the instant bird's nest produced by using the production method comprises the following steps: rehydrating the instant bird's nest finished product with water or drink, and eating after the bird'[s net evenly absorbs water.

The invention discloses an active household anti-theft denial system. The system comprises a controller, an infrared induction module, a camera, a face recognition module and a deterrence alarm module, the infrared induction module is in bidirectional connection with the controller, and awakes the system to start an anti-theft mode after being triggered, the camera is connected with the signal output end of the controller, the camera is connected with the face recognition module, the face recognition module is in feedback connection with the controller, the face recognition module is in communication connection with a cloud-end server and a mobile reception end via wireless transmission, the deterrence alarm module is connected with the voice broadcast module and an image play module, the cloud-end server is wirelessly connected with the image play module, and the image play module is connected with an intelligent wall-mounted TV set. The system includes a dormancy mode, the infrared induction module is triggered to shoot images of an invalid housebreaker and transmits the images to a user, and actively starts a propaganda mode to persuade the housebreaker to leave, and the shot images are played on the intelligent wall-mounted TV set to make a deterrence effect.

The present invention belongs to the technical field of food processing and particularly relates to a processing method of low-sugar preserved dragon fruit peels. The processing method comprises the following steps of washing, disinfecting, sugar-soaking and drying. The prepared preserved dragon fruit peels are prepared by using certain compound sugar liquid for the sugar-soaking and vacuum drying, so that moisture content of the product is about 25%, the product has good appearance and mouthfeel, and the prepared preserved dragon fruit peels are stable in sweetness and not easy to produce aMaillard reaction during drying and heating. The processing method has significant effects on prolonging shelf life of the product, at the same time inhibits isomerism proliferation of tannins in thedragon fruit peels, achieves effects on protecting color, preserving freshness and gaining weight, and extends shelf life. The prepared preserved dragon fruit peels are purplish red in color and luster, uniform, bright and glossy, good in fullness, not sticky to hands, free of cracks, transparent, moderate in sweetness and sourness, free of odor, moderate in softness and hardness, and chewy.

The invention discloses a novel Krah pipe and a preparation process thereof. The preparation process includes the following concrete steps: S1, material mixing; S2, extrusion; S3, heating; S4, winding; S5, cooling; S6, shape modification which means processing an upward socket and a socket of a pipe to a standard size and trimming ports of the pipe to make the appearance of the pipe smooth and regular; and S7, check and warehousing. The preparation process of the invention is reasonable in steps and good in continuity. A flat belt and a U-shaped belt are evenly wrapped on a heated drum mold according to predetermined positions, and so the quality of a pipe welding seam is ensured after cooling. Continuous winding forming is carried out on the mold, the cooling is selected from water cooling, air cooling or a combination of the water cooling and air cooling according to actual situation, and so the crystallization of the product is more compact and uniform. An infrared heating device isused for heating, and so the production safety is improved. Reinforcing ribs are designed in the product, which improves the overall resistance to external pressure of the pipe and is good in use effect.

The invention relates to Gaoshan Taiwan oolong and a processing preparation method thereof (the production technology capable of keeping green and red in the whole process). The preparation method of the Gaoshan Taiwan oolong comprises the steps of tea harvesting, withering, twisting, fermentation, primary baking, heaping for yellowing, secondary baking, picking, blowing of fresh wind, warehousing, re-firing, fragrance enhancing and packaging. By the adoption of the Gaoshan Taiwan oolong, matter contained in fresh tea leaves is transformed reasonably and fully, little low-boiling-point fragrant matter is lost, and the content of theaflavin called as human body soft gold is high. The product is curled, compact and uniform in appearance, and black and glossy in color and luster, and has the delicate floral note of high-grade oolong and strong ripe fruit fragrance of special-grade black tea, the tea soup is mellow, fresh and smooth, has no fire smell or smoky flavour, is not cold or cool or hot or dry, and has the golden yellow and bright color, and infused leaves are fleshy, red and bright. The taste and sense of the Gaoshan Taiwan oolong (particularly Gaoshan Taiwan oolong produced in Shouning Country, eastern Fujian Province) are better than those of common Taiwan oolong.

The invention provides molding formation equipment for paper pulp. The molding formation equipment comprises a stander, a slurry tank, a wet blank forming mechanism, a wet blank transfer mechanism anda hot-press shaping mechanism, wherein the slurry tank, the wet blank forming mechanism, the wet blank transfer mechanism and the hot-press shaping mechanism are arranged on the stander; the slurry tank is arranged at the lower part of the stander; the wet blank forming mechanism is arranged in the slurry tank; the wet blank forming mechanism is used for absorbing slurry in the slurry tank and preparing a paper mold wet blank; the wet blank transfer mechanism is arranged above the stander corresponding to the wet blank forming mechanism and is used for transferring the paper mold wet blank onthe wet blank forming mechanism to the hot-press shaping mechanism; and the hot-press shaping mechanism is arranged on the stander and is used for carrying out hot-press shaping on the paper mold wetblank. The molding formation equipment can be used for producing high-quality paper pulp and is high in production efficiency.

The invention provides a high-error-tolerance-rate deformable four-rotor aircraft and a control method, the number of rotors of the aircraft is not less than four, and the rotors are all arranged at arms of the aircraft; each arm comprises a first joint and a second joint; the starting end of the first joint is fixed to a fuselage of the aircraft, and the first joint is connected with the startingend of the second joint through a first rotating mechanism capable of horizontally rotating relative to the horizontal plane of the fuselage, so that the second joint can horizontally rotate relativeto the horizontal plane of the fuselage. The second joint is connected with a rotor wing of the vehicle arm through a second rotating mechanism capable of vertically rotating relative to the horizontal plane of the vehicle body, so that the rotor wing can vertically rotate relative to the horizontal plane of the vehicle body; the rotor wings can provide lift force for the aircraft through forwardrotation or reverse rotation; the four-rotor aircraft can solve the problem that the four-rotor aircraft damages people or objects during failure and falling and the problem of how to reduce the failure loss of the aircraft, and can continue to complete the flight task when a small number of rotors fail.

The invention discloses a joint lifting method used by a rotor spinning frame for single-spindle roller feeding, belonging to the technical field of spinning process. The prior art can not feed fiberraw materials in a speed-changing manner, therefore the jointing after yarn breakage can not satisfy the constant and saturated supply demand of the fiber amount within a short time, and the quality technical index of fine-quality medium and fine yarns produced by means of rotor spinning is influenced. In the method, each spindle is directly driven by an independent power to feed rollers; and in the case of yarn breakage, an electrical instruction is used for controlling the power of a spindle with broken yarn to drive the corresponding fed roller to sequentially act by following such speed orders as fiber strip withdrawal speed, high-speed pre-feeding speed, high-speed quantified feeding speed, roller feeding speed and normal spinning speed. The method can control the flow saturation degree of instant joint feeding, and even relieve the loss and damage caused by repeated static fiber bundle hammering by an opening roller after joint breakage, thereby fully improving the joint qualityand the whole-machine yarn forming performance of the rotor spinning frame.

An improved system and method for detection and suppression of fire that addresses the elements of the fire tetrahedron (e.g., heat, oxygen, fuel-rich smoke) to detect and suppress fires is described. Embodiments are comprised of a processor in communication with a detector, a fan, and a number of dampers. Upon detection of a triggering condition by the detector, the processor causes signals to be transmitted to the fan and dampers. Resulting changes to dampers and fans redirects airflow to evacuate heat, oxygen, and fuel-rich smoke through one or more vents in the compartment in which the triggering condition was detected. Advantages of described embodiments include utilizing existing HVAC systems, removing elements of the fire tetrahedron to suppress fires, and reducing unnecessary damage that may be caused by prior art suppression systems (e.g., sprinklers).

The invention discloses a special perforating machine for a hardware ring washer. The special perforating machine for the hardware ring washer comprises a base. Support pillars are fixedly arranged at two ends of the upper surface of the base; a top seat is welded to the top ends of the support pillars; a hydraulic cylinder is fixedly arranged on the bottom part of the top seat; a hydraulic telescopic rod is movably arranged on the bottom part of the hydraulic cylinder; a lifting plate is welded to the bottom end of the hydraulic telescopic rod; and sleeve rings are welded to two sides of the lifting plate. According to the special perforating machine for the hardware ring washer provided by the invention, the lifting plate, the sleeve rings and a lever bearing vessel are used cooperatively, so that a drill rod can descend, meanwhile, the hardware ring washer placed on the bearing vessel ascends, and the pressure on force bearing points of the hardware ring washer is increased through two ascending-descending pressure punching; and springs, the drill rod and a pressing plate are used cooperatively, so that when the drill rod is used for perforating the hardware ring washer, the hardware ring washer is firstly sealed and clamped, only one through hole for the drill rod to penetrate through is left, and the force bearing points of the hardware ring washer are ensured to be wholly concentrated at an axis part.

The invention relates to a preparation method of a spleen-strengthening, dampness-dissipating pouch-dispelling functional tea beverage. Raw materials of the tea beverage comprise, by weight, 5-8% of hyacinth bean flower extract liquid, 5-8% of cane sugar, 0.05-0.1% of potassium sorbate, 0.45-1% of citric acid and 82.9-89.5% of purified water. Surface cleaning is carried out to hyacinth bean flowers, the technologies of microwave extraction, membrane separation, flash pasteurization and the like are adopted, flavor, nutrition and efficacy constituents of the hyacinth bean flowers are protectedto the most extent, improvement of extraction efficiency enables effective constituents of the traditional Chinese medicine hyacinth bean flowers to be effectively protected, and products are favorable for storage and achievement of industrialized production simultaneously.

The invention discloses a cable storage type rotary optical cable signal transporting device, comprising a main spindle, a transmission gear system, a rotary cable storage mechanism formed by a levorotation cable storage roller and a dextrorotation cable storage roller and a transmission input part which is connected with the main spindle and comprises an optical fiber terminal seat, wherein a terminal disk which is fixedly connected with the main spindle is arranged in the transmission input part, the output end of a limiting torque clutch is connected with a half-coupling fixed on the terminal disk, the input end of the limiting torque clutch is connected with a transmission sleeve, a drive disk is connected with a drive poking rod which is fixed on the transmission sleeve through a connecting piece, and the drive disk, the limiting torque clutch and the main spindle share the same rotation center. The invention solves the problems that because cycles of reciprocating rotation of anexternal optical cable winding mechanism exceed a preset allowed rotation angle of a carried transfer optical cable on the cable storage rollers, the carried transfer optical cable can be stretched tobe broken, and other rotation parts are damaged to lead to signal transmission interruption.

The invention discloses a preparation method of a common dayflower herb heat-clearing antivirus raw juice oral liquid. The method comprises the following steps of: performing surface sterilization on collected common dayflower herb; and squeezing juice and performing technologies such as vacuum degassing, enzymolysis, micro-filtration, sterile filling, high-temperature momentary sterilization and the like to protect the nutritional and active ingredients of common dayflower herb to the maximum extent. Meanwhile, industrial production and storage of a product are facilitated. The common dayflower herb is processed into the common dayflower herb heat-clearing antivirus raw juice oral liquid which is easy to store, convenient to carry, easy to take and absorb and safe and reliable, has good mouthfeel, does not contain any additive, and has medical treatment and health-care functions.

The invention discloses a manufacturing method for extracting and processing fresh juice stock solution by using dendrobium officinale as a raw material. The method furthest protect the color, flavor, nutrition and effective ingredients of dendrobium officinale fresh juice by surface sterilization of the collected fresh dendrobium officinale and technology of juicing, enzymolysis, vacuum degasification, micro-filtration, ultra-filtration, sterile filling, high-temperature instantaneous sterilization and the like, and meanwhile, the product is favorable for storing and realizing industrializedproduction. The dendrobium officinale is processed into the dendrobium officinale fresh juice stock solution which is easy to store, convenient to carry, simple to administrate, good in mouthfeel andeasy to absorb and has health-care nutritional components and medicinal functions; the fresh juice stock solution does not contain any additive; and the content of the fresh juice stock solution reaches over 99 percent. The dendrobium officinale fresh juice stock solution can be administrated separately, also can be added into mineral water to form health-care beverage, also can be dissolved intowine to form nourishing health-care wine, and can be added into high-grade dishes to form nourishing dishes for eating.

An improved system and method for detection and suppression of fire that addresses the elements of the fire tetrahedron (e.g., heat, oxygen, fuel-rich smoke) to detect and suppress fires is described. Embodiments are comprised of a processor in communication with a detector, a fan, and a number of dampers. Upon detection of a triggering condition by the detector, the processor causes signals to be transmitted to the fan and dampers. Resulting changes to dampers and fans redirects airflow to evacuate heat, oxygen, and fuel-rich smoke through one or more vents in the compartment in which the triggering condition was detected. Advantages of described embodiments include utilizing existing HVAC systems, removing elements of the fire tetrahedron to suppress fires, and reducing unnecessary damage that may be caused by prior art suppression systems (e.g., sprinklers).

The invention discloses a production device and a production method of zhongshengmycin soluble powder. The pH value of zhongshengmycin fermentation liquor is adjusted to be acidic, and the acidic fermentation liquor is directly fed into a ceramic membrane system to treat so as to remove solid impurities and obtain clear filter liquor; and the filter liquor is subjected to nanofiltration concentration at room temperature so as to obtain a zhongshengmycin concentrated solution for spraying, and the concentrated solution is subjected to spray drying so as to obtain the zhongshengmycin soluble powder. According to the invention, the labor intensity of workers is greatly reduced, and the yield of separation and concentration of zhongshengmycin and the final titer of soluble powder are increased.

Disclosed is an axial-flow type automatic-control threshing machine for salvia hispanica threshing. A top cover is mounted at the upper end of a main cabin, a middle power support is arranged in the middle of the main cabin, a lower power support is arranged in the lower portion of the main cabin, and an inclined discharging plate is arranged between the middle power support and the lower power support. A first transmission shaft is arranged in a drum casing, the upper end of the first transmission shaft is in fit assembly with a first spline socket, and a rotary vane, an upper control springholder and a lower control spring holder are mounted on the first transmission shaft; the lower end of the first transmission shaft is connected with a transmission control spline bushing, and the first transmission shaft is provided with a plurality of floating springs. A second transmission shaft is mounted in the lower power support, the upper end of a transmission control spline shaft is connected with the transmission control spline bushing, and the lower end of the transmission control spline shaft is connected with the second transmission shaft. A motor drives the transmission shaft tofurther drive the drum casing to rotate, and three threshing rods on the drum casing thresh with adjustable threshing force; power is cut off by a power control operating rod, so that accident worsening is avoided effectively.

The invention discloses dried spiced guavas and a making method and sulfur-free composite spice thereof. The making method of the spiced guavas comprises the steps of firstly, sequentially performingcleaning, slicing and disinfecting treatment on fresh guavas, then drying guava slices, performing dehydrating, mixing and blending the dried and dehydrated guava slices with sulfur-free composite spice liquid, and then performing drying treatment. The making method is simple, and the making time is short. The seasoning effect on the guava slices is good, so that the prepared dried spiced guavas have special fragrance and flavor, and the appetite of an eater can be improved. The dried spiced guavas are low in sugar content, original nutrient value of the guavas can be well maintained, and thedried spiced guavas are safe and healthy.

The invention discloses a plug strip for reducing the loss of copper sheets, which includes a top cover, a socket, a top cover wire inlet hole, a base, a base wire inlet hole, a limit adjustment hole, a center bracket, a live wire copper sheet, a live wire contact piece, Reciprocating limit device, zero line copper sheet, zero line contact sheet, branch line support table, branch line pressing sheet, pressing and fixing wire, the top surface of the top cover is equidistantly provided with a plurality of jacks, and the top cover enters The wire hole is set at the center of the lower front of the top cover, the base line inlet hole is opened at the center of the front of the base, the limit adjustment hole is set at the back of the base, and the center bracket is fixedly connected at the center of the base. The present invention The structure is simple, the design is reasonable, and the movable reciprocating limit device is used to make the zero line contact piece connect to the plug according to the needs, which changes the traditional fixed copper piece contact structure, reduces the loss of the copper piece, and prolongs the plug-in period. lifespan of the row.

The invention discloses a joint lifting method used by a rotor spinning frame for single-spindle roller feeding, belonging to the technical field of spinning process. The prior art can not feed fiber raw materials in a speed-changing manner, therefore the jointing after yarn breakage can not satisfy the constant and saturated supply demand of the fiber amount within a short time, and the quality technical index of fine-quality medium and fine yarns produced by means of rotor spinning is influenced. In the method, each spindle is directly driven by an independent power to feed rollers; and in the case of yarn breakage, an electrical instruction is used for controlling the power of a spindle with broken yarn to drive the corresponding fed roller to sequentially act by following such speed orders as fiber strip withdrawal speed, high-speed pre-feeding speed, high-speed quantified feeding speed, roller feeding speed and normal spinning speed. The method can control the flow saturation degree of instant joint feeding, and even relieve the loss and damage caused by repeated static fiber bundle hammering by an opening roller after joint breakage, thereby fully improving the joint qualityand the whole-machine yarn forming performance of the rotor spinning frame.

Disclosed is an axial-flow type automatic-control threshing machine for salvia hispanica threshing. A top cover is mounted at the upper end of a main cabin, a middle power support is arranged in the middle of the main cabin, a lower power support is arranged in the lower portion of the main cabin, and an inclined discharging plate is arranged between the middle power support and the lower power support. A first transmission shaft is arranged in a drum casing, the upper end of the first transmission shaft is in fit assembly with a first spline socket, and a rotary vane, an upper control springholder and a lower control spring holder are mounted on the first transmission shaft; the lower end of the first transmission shaft is connected with a transmission control spline bushing, and the first transmission shaft is provided with a plurality of floating springs. A second transmission shaft is mounted in the lower power support, the upper end of a transmission control spline shaft is connected with the transmission control spline bushing, and the lower end of the transmission control spline shaft is connected with the second transmission shaft. A motor drives the transmission shaft tofurther drive the drum casing to rotate, and three threshing rods on the drum casing thresh with adjustable threshing force; power is cut off by a power control operating rod, so that accident worsening is avoided effectively.

The invention discloses a device for monitoring equipment operating linearly along tracks. The device comprises a location detection instrument and an automation device, wherein the location detection instrument and the automation device are connected, and the location detection instrument consists of a laser emitter and a laser receiver which are installed on tracks. The technical scheme is a remote and linear location monitoring method and a remote and linear location monitoring technology, possible accidents of derailment and overturning of equipment which operate linearly along tracks are effectively eliminated, and the device also can be used for safety protection of limit location exceeding pre-warning, a machine halt and the like.

The invention discloses a supporting roll bearing base. A bearing hole is formed in the bearing base, the bearing hole is internally provided with a bearing, the bearing parallel with the upper part of the bearing hole is axially provided with a transparent arc-shaped through hole, the upper edges of two sides of the bearing base are respectively provided with a step along the axial direction of the bearing, the height of each step is 2 / 3 of the radius of a bearing outer ring. According to the structure, under the existing conditions that the size of the reduction force P and the direction of the roll force can not be changed, the force bearing point location of the bearing base is partly changed, part of supporting stiffness of the bearing base is changed on the maximal stress location of the bearing, so that the loading is uniformly bore by a roller in the bearing as far as possible, the peak load of a bearing rolling body is greatly reduced, the problems that the bearing is untimely burned and the life is obviously shortened are avoided.

The invention belongs to the field of food processing, and particularly relates to tremella aurantialba mycelium polysaccharide toast and a preparation method thereof. The tremella aurantialba mycelium polysaccharide toast comprises the following raw materials: 250 parts of high gluten flour, 160-180 parts of tremella aurantialba pulp, 15-25 parts of diced tremella aurantialba, 20-30 parts of milk powder, 15-25 parts of soft white sugar, 10-20 parts of butter, 10-20 parts of eggs, 3.75 parts of active dry yeast, 2.5 parts of table salt and 4-6 parts of tremella aurantialba mycelium polysaccharide, fresh tremella aurantialba is pulped and then added into toast bread, so that the nutrition of the toast is improved; meanwhile, tremella aurantialba mycelium polysaccharide is added, so that the toast bread has polysaccharide-related health-care value, the fresh tremella aurantialba is added into the toast bread in a fresh tremella aurantialba pulping mode, and compared with existing edible fungus bread, the existing edible fungus bread is generally made in a mode of adding edible fungus powder, and according to the mode, damage and loss of some heat-sensitive nutritional ingredients in the drying process can be reduced.

The invention discloses a five-spice dried guava and its preparation method and sulfur-free compound five spices. The preparation method of the five-spice dried guava comprises cleaning, slicing and disinfecting the fresh guava fruit in sequence, and then drying the fruit pieces Dehydration, and then the dried and dehydrated fruit slices are mixed with sulfur-free compound five-spice liquid, and then dried. The preparation method of the invention is simple and the preparation time is short; the seasoning effect on the fruit slices is good, and the prepared dried spiced guava has special aroma and flavor, which can improve the appetite of the eater; the sugar content is low, and the guava can be better preserved Fruits have original nutritional value, safe and healthy.

The invention discloses a device and method for automatically testing the transition voltage of thyristors protected by MMC power modules. device, IGBT controller and temperature controller. The MMC power module protection thyristor breakover voltage automatic test device provided by the present invention can respectively simulate the actual operating conditions of the protection thyristors in the out-of-control half-bridge power module and full-bridge power module, and realize the test voltage by automatically adjusting the trigger angle of the rectifier bridge Automatic and precise adjustment can accurately and automatically test the breakover voltage of the thyristor, so as to more accurately screen the thyristor suitable for the power module, reduce the damage loss of the power module caused by the breakdown of the IGBT component, and reduce the forced outage of the entire converter probability and improve the reliability of system operation.

The invention provides saffron crocus health-care drinks and a making method thereof. The method is to treat a saffron crocus Chinese herbal medicine by techniques of microwave extraction, membrane separation, ultrahigh-temperature sterilization, sterile filling and the like. In the invention, by adopting low-temperature microwave extraction and instant ultrahigh-temperature sterilization, the flavor, nutrients and active ingredients of medicine solution is protected to a maximum degree; and the made drinks do not require refrigerating and adding preservative, the quality, freshness and nutrients of the drinks can be kept for a long term, and health-care drinks with bright red color can be make. The making process is short in flow, low in cost, labor-saving, and time-saving, the content of active ingredients is high, and the damage and loss of nutrients and flavor materials in the drinks are reduced. When taken for a long time, the saffron crocus health-care drinks can subside swelling, relieve pains, cool blood, detoxify, resist cancer and aging, and improve the immunity in human bodies completely.

The invention discloses a power strip capable of reducing copper sheet loss, and the power strip comprises a top cover, jacks, a top cover wire inlet hole, a pedestal, a pedestal wire inlet hole, a limiting adjustment hole, a central support, a live wire copper sheet, a live wire contact sheet, a reciprocating limiting device, a zero line copper sheet, a zero line contact sheet, a branching support platform, a branching pressing sheet, and a compression fixing wire. A plurality of insertion holes are formed in the top surface of the top cover at equal intervals; The top cover wire inlet hole is formed in the center of the lower portion of the front face of the top cover, the base wire inlet hole is formed in the center of the upper portion of the front face of the base, the limiting adjusting hole is formed in the back face of the base, and the center support is fixedly connected to the center of the interior of the base. The power strip disclosed by the invention is simple in structure and reasonable in design. By using the movable reciprocating limiting device, the zero line contact sheet is connected with the plug according to needs, thereby changing a conventional fixed coppersheet contact structure, reducing the loss of the copper sheet, and prolonging the service life of the power strip.