462 results about "Cold season" patented technology

The invention relates to an energy-saving seedling raising greenhouse, which comprises a greenhouse. A thermal insulation wall is arranged on the back part of the greenhouse; and a solar water heater is arranged on the top of the thermal insulation wall. A plurality of groups of heating radiators are arranged inside the greenhouse; a hot water reservoir is arranged below the ground level of the greenhouse; a hot water outlet pipe is connected with the right end of the hot water reservoir; the water outlet of the hot water outlet pipe is connected with a water inlet of a water delivery pipe; and a circulating pump is connected in series on the water delivery pipe. The water outlet of the water delivery pipe is respectively connected with the solar water heater, a radiating pipe network and the water inlet of the heating radiator groups through electric stop valve pipes connected in series. The solar water heater, the radiating pipe network and the water outlet of the heating radiator groups are respectively connected with the water inlet of a water return pipe through pipes; the water outlet of the water return pipe is connected with the water inlet of a hot water inlet pipe; and the water outlet of the hot water inlet pipe is connected with the left end of the hot water reservoir. The invention aims to provide the energy-saving seedling raising greenhouse which has energy conservation, environmental protection and convenient use and does not need special heating in a cold season.

The invention discloses a ground-type tidal Irrigation system, which is used for irrigating potted plants with water or nutrient solution and comprises an upper water supply and drainage trench which is arranged at the upper part of a seedbed, a lower water supply and drainage pipeline which is arranged below the seedbed and is connected with the upper water supply and drainage trench, a water supply system and a water drainage system which are respectively connected with the lower water supply and drainage pipeline and a nutrient solution pond, and a comprehensive control system which are connected with the water supply system, the water drainage system and the nutrient solution pond. An ultraviolet ozone disinfection system and an electric floor heating system are additionally arranged in the system. The ground-type tidal Irrigation system can simulate tide rising and tide falling to irrigate the plants from roots, realizes the continuous cyclic use of the nutrient solution through the ultraviolet ozone disinfection system, reduces the spreading of soil-borne diseases and improves the production benefit of crops; good ground temperature can be provided for the growth and the irrigation of the crops in cold seasons and the situation that the crops grow slowly is avoided; and the comprehensive control system can realize the comprehensive control of the irrigation system, the disinfection system and the electric floor heating system to enable the application to be more convenient and faster.

The invention discloses the application of a thermal pipe-crushed stone protection slop composite roadbed with the functions of temperature reduction and thermal insulation in a broad width high-grade road. The composite roadbed comprises sealed L-shaped thermal pipes, crushed stone protection slops, insulating layers and roadbed filling, wherein the crushed stone protection slops are laid on side slopes on both sides of the roadbed until reaching a natural earth's surface; the L-shaped thermal pipes are embedded in the roadbed filling, and ammonia or nitrogen is used as working media in the pipes; and the insulating layers are embedded in the underground roadbed filling. By utilizing the changes of angles of the condensation segments and the evaporation segments of the L-shaped thermal pipes in the roadbed, the composite roadbed lowers the temperature of soil bodies under the center of the roadbed; and by combining the advantages of the crushed stone protection slops and the thermal insulating layers, the composite roadbed increases the cold energy suction volume in a cold season and effectively controls the heat absorption capacity in a warm season, thereby realizing the temperature reduction of the underlying soil bodies of the broad width high-grade roads, balancing a temperature field, increasing the upper limit of frozen soil, and meeting the special requirement of roadbed stability of perennial high temperature permafrost regions.

The geothermal system uses an outer and an inner pipe installed in a single borehole. Cool fluids are pumped down through one pipe and returned to the surface through the other pipe. Subterranean heat increases the temperature of the cool fluid and this heat is returned to the surface where the heated fluid is recovered. The fluid with the heat removed is then pumped back down the borehole to be re-heated. Extra heat recovered from the ground surrounding a lower portion of the borehole is stored in the ground and rock formation surrounding an upper portion of the borehole during warmer seasons to optimize the amount of heat stored in the ground for extraction during colder seasons.

The invention relates to a heat pump technology used on a ship, in particular to a double-heat-source heat pump water heater for a ship and a control method of the heat pump water heater. The water heater comprises a refrigerant loop, a domestic water loop, a seawater loop and an electric cabinet. The method comprises the steps as follows: an air source heat pump is organically combined with a seawater source heat pump, and evaporators are switched with a proper control method. According to the heat pump water heater and the control method, air energy can be fully used, at the same time, the condition that the water resource is abundant in a ship working environment also is fully used, the defect that the air source heat pump is difficult to prepare hot water when the ship sails in a cold region or a cold season is overcome, seawater heat can be reasonably used, and a purpose of reducing power consumption for preparing hot water is achieved.

The invention provides a cold season nutrition-balanced compound yak block, each kg of the block consists of the following raw materials of: 0.3-0.6g of zinc sulfate, 0.2-0.4g of copper sulfate, 0.01-0.02g of sodium selenite, 0.02-0.25g of potassium iodide, 0.02-0.04g of cobalt chloride, 10-20g of magnesium oxide, 70-100g of calcium hydrophosphate, 80-120g of puffing corn seed powder, 50-80g of bran, 20-40g of rapeseed meal, 50-100g of high-energy fat powder, 20-40g of urea, 150-250g of salt, 200-300g of bentonite, 30-60g of portland cement, 80-150g of molasses and 20-40g of vitamin premix. In addition, a technology for producing the block is provided, and better combines a chemical solidification technology and a mechanical pressing technology; and according to the seasonal variation characteristics of forage grass feed and nutritional statuses during yak raising, through taking the compositions and quantities of earth mineral elements which are ingested by the yak into consideration, the technology optimizes and adjusts the formula of the yak nutrition block, and balances the yak nutrient element supply. A curing agent has wide select sources and is low in price, and the compound yak block has balanced nutrition and larger density, is reasonable in feed intake, and is suitable to the purpose of nutrient element supplement for grazing yaks of different production levels in cold seasons.

The invention belongs to the technical field of animal husbandry, and specifically relates to a method for the ecological captive breeding of goats. According to the method for the ecological captive breeding of goats, a pasture planting base and a sports ground are established, wherein the pasture planting base is used for planting high-yield and high-quality pastures which are used as the feed sources of the captive goats, and the sports ground is used as a sport field for the goats; furthermore, the goat manure and urine in goat pens are collected to make organic fertilizer which is used for the planting fertilization of the pastures; one third of the pasture planting base is used for planting perennial pastures; and two thirds of the pasture planting base is used as an annual pasture planting area which is used for the crop rotation of cold-season and warm-season pastures. According to the method provided by the invention, the obvious conflict of land scramble between the breeding industry and the mountain planting industry is effectively solved and the mountain economic crops are not damaged by the grazed goats any more, so that the safe production is realized, the orderly development of the whole large-scale agriculture is promoted, sustainable development is obtained and eco-friendly development is realized.

The invention discloses application of a transparent wall vent pipe-massive crushed stone layer cooling and insulating composite road bed in a wide road. The structure of the road bed consists of a transparent wall vent pipe, a massive crushed stone layer, geotextile, an insulating layer and road bed filling soil; the massive crushed stone layer is paved on a compacted natural ground surface; the transparent wall vent pipe is embedded into the top of the massive crushed stone layer; and then, the geotextile, the insulating layer and the road bed filling soil are paved on the massive crushed stone layer in turn. By using the transparent wall vent pipe, the temperature of the top of the massive stone layer is reduced, the temperature difference between the upper and lower boundaries of the massive stone layer is increased, natural convection of the massive stone layer in a cold season is enhanced, and the cold energy absorption amount of the road bed in the cold season is improved; and by combining the heat insulation property of the insulating layer, the absorption amount is effectively controlled in a warm season, and the net heat release amount of the road bed in a freezing and thawing cycle is greatly improved so as to realize reduction of underlying soil temperature of the wide high-grade road bed, balance the temperature field, promote the upper limit of frozen soil and meet the special requirement of stability of the wide high-grade road bed in a high-temperature permafrost.

The invention discloses a low-temperature diesel exhaust reducing agent and a preparation method thereof. The reducing agent is composed of a component A, a component B, a component C and a component D and is characterized in that the components A, B, C and D are dissolved and mixed in a certain ratio. The component A is high-purity water with mass fraction of 40 to 70%; the component B is urea with mass fraction of 20 to 35%; the component C is micromolecular liquid amide with mass fraction of 5 to 20%; and the component D is micromolecular alcohol with mass fraction of 2 to 35%. Compared with a traditional urea reducing agent, the low-temperature diesel exhaust reducing agent can be used at low and ultralow temperature. The freezing point of the prepared reducing agent is lower than -15 to -35 DEG C, has surface tension obviously smaller than common urea reducing agents and is applicable in four seasons in the south China and in spring, summer, autumn, early winter and cold seasons in north China.

The invention discloses a method for maintaining and reproducing an evergreen lawn. The method includes technological steps of (1), selecting a warm-season lawn green land and determining rejuvenation and maintenance time of a lawn; (2), taking rejuvenation and maintenance measures; (3), manufacturing a cold-season soil-free grass carpet; (4) selling the cold-season soil-free grass carpet and restoring the growth of the warm-season lawn. The method has the advantages that the built lawn is rejuvenated and maintained on the same lawn area, the new lawn with the area one to two times that of the built lawn is reproduced simultaneously, accordingly, the green period of the built lawn is prolonged, the new lawn with the large area is reproduced, and a novel mode for maintaining and reproducing the evergreen lawn is formed; the land productivity is high, the production cost is low, and economical, social and environmental benefits are obvious; as observed by tests, manufacture of the soil-free grass carpet rarely affects the lawn of the green land, and the growth of the lawns is unaffected even if dormant periods in different years are properly shortened.

The invention relates to an evergreen mixing lawn consisting of cynodon dactylon and kentucky bluegrass and the planting method of the lawn. The natural characteristics of the cold-season kentucky bluegrass and the warm-season cynodon dactylon are utilized, the characteristics that the kentucky bluegrass has underground rhizomes and the cynodon dactylon has the growth habit of growing surface runners are utilized, and the mode that the seeds of the kentucky bluegrass are reseeded on a cynodon dactylon lawn or the rhizomes of the cynodon dactylon are inserted on a kentucky bluegrass lawn to build the mixing lawn. The two plants forming the mixing lawn can naturally circulate, the cynodon dactylon mainly grows and the kentucky bluegrass rests as underground rhizomes in summer, auxiliary buds of the rhizomes of the kentucky bluegrass grow upwards to get through the surface runners of the cynodon dactylon to form plants to take place of the cynodon dactylon before the cynodon dactylon turns yellow in august, the kentucky bluegrass grows in winter and the cynodon dactylon rests as surface runners, the surface runners of the cynodon dactylon germinate in the next spring to gradually take place of the kentucky bluegrass, and thereby that the lawn is evergreen is realized.

The invention provides a water-saving closed type cooling tower mainly comprising a blower, water collecting devices, nozzles, a spraying pump, air cooling pipe groups, shutters, an air-inlet grille and a lower-part water collecting tank, wherein the two air cooling pipe groups with heat exchanging pipes as finned pipes are obliquely arranged below the nozzles positioned at both sides inside a tower body; one side of each air cooling pipe group is provided with the shutters, and the other side of the same is provided with the water collecting device. Compared with a conventional closed type cooling tower, the water-saving closed type cooling tower only depends on the air cooling of the finned pipes to achieve the purpose of cooling without spraying water in a cold season with the air temperature lower than 10 DEG C so that water loss is zero in the cold season, only needs to spray the water on a part of the finned pipes when the air temperature is higher than 10 DEG C, and gradually increases spraying water quantity following the increase of the air temperature, thereby saving 60-80 percent of the spraying water compared with the conventional closed type cooling tower.

The invention provides a cultivation method of mixed-lawn, providing the cultivation method of novel mixed-lawn, which solves the problems of high maintenance cost and high consumption of the water, nutrient and energy for the cold season lawn, as well as the problems of short green stage, poor greening effect and difficult cultivation for the warm season lawn through the mixed-lawn method of the stalked meadow grass which is the cold season lawn grass and the zoysia which is the warm season lawn grass, and the process of preparing, snowing, maintaining the seedling, pruning, managing the finished lawn and the like.

The invention provides a machine room air conditioner system and a control method thereof. The machine room air conditioner system comprises a refrigeration circulating system and a heat pipe loop system. The refrigeration circulating system comprises a compressor, a condenser, a throttling device and an evaporator which are all connected with one another. A controller controlling the compression ratio of the compressor is arranged on the compressor. The controller is connected with a temperature sensor arranged outside a machine room. The heat pipe loop system comprises a fluorine pump and a heat pipe which are connected with the condenser and the evaporator; the heat pipe loop system is formed by the fluorine pump, the heat pipe, the condenser and the evaporator; and the heat pipe loop system can cool the machine room through a natural cold source outside the machine room. According to the technical scheme, on one hand, the compression ratio can be automatically adjusted by the machine room air conditioner system according to the outside temperature, and therefore the compressor can perform variable-compression-ratio work; and on the other hand, the machine room air conditioner system can cool the machine room through the outside natural cold source in winter and other cold seasons, and therefore the energy consumption of the machine room air conditioner system can be reduced.

A heated pet enclosure which allows for a heated area for a pet to lie upon during the cold weather seasons. The shelter utilizes its design to allow for the heating components to be packaged, shipped and displayed at the retail store utilizing minimum space. More specifically, the space which is wasted in a two piece plastic pet enclosure when an inverted roof section is placed in an upright base section, has now been designed and utilized to hold the necessary components for the heated pet enclosure. This new packaging innovation allows the heated pet enclosure to be packaged, shipped and displayed in a single grouping instead of multiple packaging.

The invention relates to a medium production method of a soilless lawn adaptive to an arid area, which comprises the following steps of: 1) selecting cold-season lawn grass as seeds; 2) mixing slag and organic sludge composts in proportion to form a growth medium layer; 3) mixing leftovers obtained during mushroom production, sawdust and stalk powder in proportion, and sequentially adding water-retaining agent and slow release fertilizers to form a water-retaining nutritional slow release material layer; 4) laying a plastic mulching film on the ground as an isolating layer, and then laying a polypropylene sunshade net as the bottom layer of the lawn; 5) firstly laying the growth medium layer and then laying the water-retaining nutritional slow release material layer on the bottom layer ofthe lawn; 6) evenly sowing the seeds to form a seed layer and using lawn special non-woven fabrics to cover the seed layer to form a sprout protection layer, wherein the construction of a lawn bed iscompleted; 7) controlling the growth environment of the lawn bed; 8) watering everyday at a seedling stage to keep the surface of the lawn bed to be moist; and 9) conducting indicator determination after the lawn is formed. The medium production method of the soilless lawn adaptive to the arid area has the advantages of low raw material cost, reasonable structure, high water-retaining capacity and simple production method, and is suitable for climates in arid and semiarid areas.

The invention discloses an inductive fishing rod. The inductive fishing rod comprises a rod body, a fishing line and a fish hook, wherein the rod body is connected with one end of the fishing line; the other end of the fishing line is connected with the fish hook; a heating sleeve encircles the head of the rod body; an electric heating patch is adhered between the heating sleeve and the rod body and is connected with a detachable battery which is arranged at the hollow inner part of the rod body; a PCB (Printed Circuit Board) device is arranged above the rod body in the vertical direction and is connected with a vibration sensor and a tension sensor which are arranged on the fishing line and the fish hook through circuits. With the inductive fishing rod, a fisherman does not need to concentrate on observation and judgment of the bite situation through a float all the time, so that the eyestrain of the fisherman is avoided; by the arrangement of an alarm, the fisherman can have a rest and can effortlessly determine a bite only by hearing a voice prompt tone. By additionally mounting the heating sleeve at the bottom of the fishing rod, the exposed hands of the fisherman can be kept warm in a cold season and are prevented from cold injury.

The invention provides a diesel vehicle urea solution with low-temperature properties and a preparation method thereof. The diesel vehicle urea solution with the low-temperature properties is composed of components of A, B, C and D, wherein the component A is high-purity water, the component B is urea, the component C is micromolecular liquid hydramines and the component D is micromolecular liquid alcohols. By weight part, the diesel vehicle urea solution with the low-temperature properties is composed of 40-70 parts of the component A, 20-25 parts of the component B, 5-25 parts of the component C and 5-40 parts of the component D. The diesel vehicle urea solution with the low-temperature properties obtains a freezing point lower than -18 DEG C--35 DEG C and a surface tension level lower than that of ordinary vehicle urea, thereby being applicable to all seasons in southern and northern regions, particularly to cold seasons in Northeast China.

The invention relates to an outdoor deicing vehicle, which is used for mainly solving the icing problems of viaduct bridges, high-voltage lines, iron towers and the like in the cold season. The outdoor deicing vehicle is composed of a disc type blade, a bracket, a lift connecting rod, a control device, a chassis and a wheel. The bracket is arranged on the top of the lift connecting rod. The blade is arranged at the upper part of the bracket. The chassis is arranged at the bottom of the lift connecting rod. The control device is arranged at one side of the chassis. The wheel is arranged on the bottom surface of the chassis. The lift connecting rod, the blade and the control device are electrically connected. The outdoor deicing vehicle disclosed by the invention can be operated remotely and capable of safely and conveniently removing ice slush and ice cakes at high position outdoors; the harm on pedestrians and surrounding articles resulted from self-dropping of the ice slush is reduced; and the accidents, such as the breakage of a high-voltage line resulted from suppressing workload, the collapse of the iron tower and the like, can be avoided.

The invention discloses a four-season-evergreen golf lawn cultivation management and protecting method. The four-season-evergreen golf lawn cultivation management and protecting method comprises the following steps that fertilizer consumption amount and water consumption amount of a warm-season type lawn are reduced before seeds are sown on a lawn, and low trimming is conducted on the warm-season type lawn; cold-season type grass seeds are selected, a seeder is used for carrying out sowing, and uniform velocity of sowing is ensured; the lawn after sowing is slightly pressed and is covered by a sandy-soil layer; water is sprayed on the lawn; the water spraying depth that water soaks a soil layer with depth of 5-10centimeters is preferred, the water is sprayed in the morning and at night once respectively, and the water is sprayed 20 to 30 minutes every time; when two to four leaves of a grass are grown, nitrogen phosphorus and potassium compound fertilizer is implemented; when the grass length is 5-centimeter long, a first trimming is conducted, and then the trimming height is gradually reduced. The four-season-evergreen golf lawn cultivation management and protecting method solves the winter green-fading problem of the lawn, the lawn is made to be good in ornamental value in winter to achieve the four-season-evergreen ornamental effect, and smooth transition of the cold season and the warm season and natural joining of the cold season and the warm season are achieved, and the four-season balanced viewing effect is achieved.

The invention discloses a liquid heating type metering jet pump in an SCR (selective catalytic reduction) system which is used for jetting a reducing agent in the SCR system into an exhaust pipe. The liquid heating type metering jet pump comprises a metering jet unit and a water heating unit for heating the metering jet unit, wherein the metering jet unit comprises a pump body, a diaphragm pump, a metering valve, a baseplate and a liquid flow channel; the diaphragm pump and the metering valve are arranged on the pump body; and the liquid flow channel comprises a liquid flow pipeline arranged on the pump body, a reflux pipeline, a liquid suction joint, a liquid outlet joint and a liquid return joint, and the water heating unit comprises a water circulating pipeline, a water inlet joint anda water outlet joint which are arranged on the pump body. The liquid heating type metering jet pump adopts a way of introducing heated cooling water of an engine into a metering pump for realizing circulating flow, and the pump body and the reducing agent in the pump body can be heated in the cold season, thereby improving the utilization rate of energy; and furthermore, the structure is compact and the degree of integration is high.

The invention relates to a high-frequency sensing charging and heating dual-purpose service platform which comprises a platform shell (1), a function circuit board (2), a sensing transmitting coil (3), a function operation panel (4), a high-temperature-resistant isolation panel (5), a USB low-voltage output charging socket (6) and a 220V power supply plug wire (7). Multiple service functions of mobile wireless charging and drink heat preserving and heating are achieved. During mobile wireless charging, a mobile phone with a wireless charging sensing receiving system is placed on the dual-purpose service platform to be charged in a wireless mode. When a stainless steel cup or a cup with a metal pad adhering to the bottom is placed on the dual-purpose service platform, high-frequency electromagnetism energy radiated by the sensing emitting coil in the platform is absorbed by the metal cup bottom and a vortex is generated to produce heat. Liquid in the cup is heated to be 50 DEG C to 60 DEG C and prevented from cooling. The functions of heating and preserving heat are achieved. The high-frequency sensing charging and heating dual-purpose service platform has practical significance in facilitating life of people and improving life quality especially in winter.

The invention provides a warm-season lawn overseeding method and belongs to the technical field of lawns. The method includes the steps of overseeding time setting, wherein reseeding of cold-season grass seeds is conducted on a warm-season lawn from late September to early October, and the cold-season grass seed overseeding amount is 20-35 g / m<2>; preparation of a turf bed; sowing; sand laying; irrigation; rolling; pruning; fertilizer application; weeding; disease prevention; maintenance. According to the warm-season lawn overseeding method, reseeding is conducted on the warm-season lawn by means of the cold-season grass seeds, proper overseeding time and overseeding amount are selected, and the lawn is formed quickly by taking the measures of turf bed preparation, sowing, irrigation, pruning, maintenance management and the like, so a good athletic lawn is obtained while the warm-season lawn is dormant in winter; by means of water and fertilizer control, the cold-season grass and warm-season grass are successfully converted in June and July, and accordingly the lawn remains green throughout the year.

The invention discloses a solar photoelectric complementary road de-icing and snow melting control system. The system comprises a central processing unit, a solar photovoltaic receiving module, a photoelectric conversion control module, an environmental monitoring module, a power control module and a heating device which is paved below a road surface, wherein the solar photovoltaic receiving module is connected with the power control module through the photoelectric conversion control module; the output end of the power control module is connected with the input end of the heating device; and the central processing unit is respectively connected with other modules through data buses. The system has the advantages of high heat efficiency, energy conservation, low operation cost and the like, can be controlled by a remote computer, automatically controls the work of the system according to practical situations of a road, adopts dual-energy setting of solar photovoltaic power generation and mains supply electrical energy, and can effectively prevent the road from icing and covering snow in a cold season, reduce traffic accidents and improve road safety.

The invention relates to a membrane coverage aerobic composting system suitable for intermittent feeding and a using method thereof. The membrane coverage aerobic composting system comprises a membrane coverage unit, a composting groove unit, a composting parameter collection and ventilation control unit and a percolate recycling unit. The system is suitable for large-scale organic waste treatmententerprises, mechanisms such as small-scale treatment centers which frequently conduct intermittent feeding and composting, or enterprises such as livestock and poultry breeding enterprises. Meanwhile, the invention provides a biological heat air heating system. The biological heat air heating system is based on the microbial fermentation principle and can be connected with an air blower and thelike of the membrane coverage composting system to achieve ventilation and heating in cold regions or in cold seasons.

Neck warmer is a device designed to hold a plurality of chemically warming packet insert(s) for keeping a wearer warm and comfortable. The neck warmer utilizes chemically warming packet insert(s) in an efficient manner, allowing the user to enjoy cold weather activities for longer periods of time. The neck warmer is ideal for use while hunting, ice fishing, skiing or simply being outside during the colder seasons.

The invention discloses a urea formaldehyde foam matrix for cultivating cold-season turfgrass and a preparation method thereof. The method comprises the following steps that: (1) formaldehyde and urea are mixed to carry out polycondensation reaction, and urea-formaldehyde resin solution is prepared; (2) butyl naphthalene sulfonate, phosphate and water are mixed, and blister fluid is prepared; (3) the blister fluid and the urea-formaldehyde resin solution are foamed in a foaming machine, and liquid foam is prepared; (4) the liquid foam is cured and dried, and a foam matrix is prepared; and (5) aldehyde removal agent, hydrophilizing agent and potassium are dissolved into the water to prepare a mixture, the mixture is sprayed on the surface of the foam matrix and dried, and the urea formaldehyde foam matrix for cultivating cold-season turfgrass is prepared. The matrix is characterized in that water absorption and preservation properties are good, and releasing nitrogen nutrient and nutrition elements required by the growth of other turf are contained. When being used to turf establishment, the matrix not only can be used for turf production on a cultivated land and then paved on other lands, but also can be directly used for turf establishment, and has significant economic, social and ecological benefits.

The invention discloses a control method and system of a mobile terminal and a storage medium. The control method of the mobile terminal comprises the following steps of obtaining the environment temperature; judging whether the environment temperature is lower than a first preset threshold value or not; enabling a hand-warming function of the mobile terminal when it is judged that the environment temperature is lower than the first preset threshold value. According to the control method and system of the mobile terminal and the storage medium, the comfort and the operating efficiency when a user uses the mobile terminal in a cold season can be improved.

The invention belongs to the field of cable snow removing, in particular to a snow removing device for a high-voltage electric wire, which comprises a telephone pole, a bracket, a cable, a first snowremoving mechanism, a second snow removing mechanism, wherein the first snow removing mechanism and the second snow removing mechanism are symmetrically mounted on the top of the telephone pole through the bracket; In the whole process of snow removal, the cable jitter up and down, so that the snow on the cable slipped; At the same time, the shaking of the cable also drives the stretching disk inthe first snow removing mechanism and the second snow removing mechanism to slide and rotate transversely and reciprocally; The cable continues to rotate back and forth, causing the snow on the cableto fall further under the action of centrifugal force; The shaking of cable and the reciprocating rotation of cable make the cable remove the snow to the maximum extent and achieve the purpose of better snow removal. It provides a reliable guarantee for the power transmission in the cold season and saves a lot of human cost.

The invention relates to the field of tunnel portal side slopes, in particular to a structure capable of avoiding cold damage to a high-temperature and unstable freeze soil area tunnel portal side slope. The structure comprises a side slope rock and earth mass, a rubble stone layer and a side slope retaining structure. Ventilation pipelines are distributed in the rubble stone layer at equal intervals. The wall of each ventilation pipeline is provided with ventilation holes. The upper end of each ventilation pipeline faces the cold air direction of the cold season. The upper end and the lower end of each ventilation pipeline are respectively provided with a horizontal cross slope. The lower end of each ventilation pipeline is connected with a longitudinal drainage ditch. The upper port and the lower port of each ventilation pipeline are respectively provided with a wind stop cover. Square ventilation ports corresponding to the ventilation pipelines in portion are distributed at the bottom of the side slope retaining structure. The rest of the side slope retaining structure is embedded into the ground surface. By the utilization of the characteristics of natural convection circulation of cold air in the rubble stone layer and rapid ventilation and cooling in the ventilation pipelines with the ventilation holes, the high-temperature and unstable freeze soil area tunnel portal side slope is automatically cooled, the temperature of the side slope is reduced, the upper limit of freeze soil is increased, cold reserves of a stratum are increased, and the problem of cold damage to the retaining structure of the high-temperature and unstable freeze soil area tunnel portal side slope is solved.