176results about How to "Prevent gnawing" patented technology

The invention belongs to the technical field of corn harvesters and relates to an ear picking device which can be installed on the corn harvesters, in particular to a corn ear-picking stubble-cutting stem-cutting header capable of breaking off ears from upside. The corn ear-picking stubble-cutting stem-cutting header capable of breaking off the ears from upside comprises a roller and plate combined type ear picking unit, a stem pulling and conveying device and a stubble-cutting stem-cutting device. The corn ear-picking stubble-cutting stem-cutting header capable of breaking off the ears from upside is characterized in that the roller and plate combined type ear picking unit is composed of a pair of conveying rollers and a pair of ear baffles arranged below the conveying rollers, and the roller and plate combined type ear picking unit is fixedly connected with a machine frame of a harvest machine and is arranged obliquely in the mode that the front portion is high and the lower portion is low relative to the ground (when the roller and plate combined type ear picking unit is in work); the stem pulling and conveying device is a telescopic rod tooth type mechanism and is arranged behind the ear picking unit; the stubble-cutting stem-cutting device is composed of a stubble-cutting device and a stem-cutting device, the stubble-cutting device is arranged below the ear picking unit, and the stem-cutting device is arranged below the stem pulling and conveying device. According to the corn ear-picking stubble-cutting stem-cutting header capable of breaking off the ears from upside, the bending break principle of manual corn ear picking is simulated, the problem that corns are damaged when an existing stretching and squeezing method is adopted can be thoroughly solved, and ear picking power consumption can be greatly reduced.

The invention provides a floatable driving plate and grain pulling chain combined roller plate type corncob breaking-off mechanism, relates to a corncob picking device installed on a corn harvesting machine and belongs to the technical field of corn harvesting machinery. The floatable driving plate and grain pulling chain combined roller plate type corncob breaking-off mechanism comprises a transmission gear, a box body, corncob blocking plates, short stem-pulling delivery rollers, universal joints, driving plates, worms and gears, long stem-pulling delivery rollers, floating rods and grain pulling chains and is characterized in that the floatable driving plate and grain pulling chain combined roller plate type corncob breaking-off mechanism comprises a pair of long stem-pulling delivery rollers, a pair of the short stem-pulling delivery rollers and a pair of corncob blocking plates arranged under the delivery rollers, the driving plates are respectively located at the front ends of the long stem-pulling delivery rollers and the front ends of the short stem-pulling delivery rollers and are connected and driven by using the worms and gears, the grain pulling chains are located under the driving plates and are connected with the universal joints through the floating rods, the driving plates and the grain pulling chains guide corn plants to be accurately fed the position between the two stem-pulling delivery rollers through the combined clamping effect.

The invention provides a mining communication cable. According to the mining communication cable, extruded insulation layers outside a conductor form insulated wire cores, every two insulated wire cores are hinged oppositely to form a single cable core, an electric cable core is formed by hinging multiple cable cores, and an isolating layer, a drainage wire, a copper-polyethylene bonding protective layer, a fire resistant layer, an interlocking armor layer and an outer protective sleeve are arranged outside the electric cable core in sequence. The mining communication cable has the properties of resisting electromagnetic wave interference and being tensile, capable of bearing pressure, dampproof, resistant to fire, resistant to low temperature and resistant to weather, and is especially suitable for communication transmission in various strip mines.

The invention discloses a septic tank special material with good processing fluidity. The septic tank special material is prepared from the following components in parts by weight: 100 parts of HDPE (high-density polyethylene); 5 to 20 parts of calcium carbonate; 1 to 10 parts of PP (propene polymer); 1 to 5 parts of naphthenic oil; 0.5 to 2 parts of zinc stearate. The invention also discloses a preparation method of the septic tank special material. The preparation method comprises the following steps: S1, mixing the HDPT, the calcium carbonate, the PP, the naphthenic oil, the zinc stearate and the SEBS, softening and fusing; S2, smashing an anti-bio agent and spraying on LLDPE (linear low density polyethylene) flux, and cooling to room temperature, so as to obtain an anti-bio microcapsule; S3, adding the anti-bio capsule obtained in S2 into the fusant of S1, and performing injection molding.

The invention discloses a peeling device for corn ears and a corn combine provided with the device. The peeling device for the corn ears comprises a support and a peeling mechanism mounted on the support, wherein the peeling mechanism comprises a driving mechanism, peeling opposite rollers and a flexible pressing and holding mechanism; the peeling opposite rollers and the flexible pressing and holding mechanism are connected with the driving mechanism respectively; a peeling passage is formed between the peeling opposite rollers; the flexible pressing and holding mechanism is arranged corresponding to the peeling passage above the peeling opposite rollers; a fruiter ear passage is formed between the flexible pressing and holding mechanism and the peeling opposite rollers; and the flexible pressing and holding mechanism is used for pressing corn ears on the peeling opposite rollers so as to strip the peels of the corn ears. The corn combine comprises a rack as well as a travelling chassis, a power transmission system, a rear picking platform, a transport auger, a lift conveyer, a corner ear peeling device and an ear box which are mounted on the rack. The peeling device and the corn combine can meet requirements of a fruit rear peeling machine for the peeling rate and the grain damage rate.

The invention relates to a guide device, and in particular relates to a guide device for preventing a wire rope of a winding engine from separating from a groove. The guide device comprises a bracket and a guide roller, wherein a drive supporting device is arranged between the bracket and the guide roller, and the drive supporting device is connected with a core shaft of the winding engine through a drive structure. The drive structure can facilitate the drive supporting device to rotate synchronously with the winding engine, and the position of the guide roller also correspondingly changes along with change of the position of a rope groove on the winding engine, so a transmission direction of the wire rope between the winding engine and the guide device is kept consistent with the direction of the rope groove all the time, so eating phenomena of the wire rope and the rope tank can be effectively prevented, and safe and smooth production line is ensured. The guide device disclosed by the invention has the characteristics of simple structure, convenience for operation, significant effect and the like.

The invention discloses an automatic drinking device and device for pets. The device structurally comprises an upper shell and a lower shell, the top of the upper shell is provided with a water inlet channel and a USB interface, and the water inlet channel is connected to a water resource through a water guide pipe. The upper shell is internally provided with a water storage bottle; the water storage bottle comprises a bottle body, an upper bottle plug and a lower bottle plug, the upper bottle plug is arranged at the top of the cylindrical bottle body, and the lower bottle plug is arranged at the bottom of the cylindrical bottle body; a water inlet hole and a vent hole are formed in the upper bottle plug, the water inlet hole is connected with the water inlet channel through the water guide pipe, and the water guide pipe is provided with a peristaltic pump; the water storage bottle is internally provided with a water level sensor, the lower bottle plug is provided with a water outlet which is connected with a water nozzle, the water nozzle penetrates through the front side wall of the upper shell and stretches out, and the tail end of the water nozzle is provided with a steel ball; a communication module, a control main board, the peristaltic pump and the water level sensor are electrically connected. By means of the automatic drinking device and method, automatic drinking in the pet raising process can be achieved, and the water level in the water storage bottle can be monitored in real time.

The invention discloses standing corn harvest machine cutting bench, including reciprocating cutting device, machine skeleton, corn stem separator, corn stem prodding chain, flexible leaf stirring auger, leaf removing board, pressing pole, corn stem support pole, stem pressing pole, tassel pick board, long stretch stem roll, short stretch stem roll and more. Two units of corn stem separator is symmetrically installed at machine skeleton front most end, one unit of corn stem separator back lower part is arranged with chain wheel, the other back lower part is provided with pressing pole, chain wheel is joined with head moving chain wheel through corn stem prodding chain, pressing pole faces towards corn stem prodding chain, corn stem prodding chain and pressing pole front lower part is installed with flexible leaf stirring auger and leaf removing board, long, short stretch stem rolls and pull moved stretch stem roll are put at machine skeleton back section, the front of long, short stretch stem rolls and pull moved stretch stem roll is arranged perpendicular tassel pick board, back section of two parallel units of stem support pole is installed above tassel pick board, the front is installed on corn stem separator machine skeleton, 2 / 3 size of which is placed with the stem pressing pole, the device works reliably, bites no tassel, and possesses good flexibility.

The invention provides a rat-proof optical cable, a preparation method thereof, and an outer sheath material of the rat-proof optical cable. The rat-proof optical cable comprises a cable core which is formed by stranding a central reinforcement piece and a plurality of beam tubes around the reinforcement piece, and the beam tubes are internally provided with a plurality of optical fibers. The cable core is wrapped by a stainless steel belt, and an outer sheath is extruded at the outermost layer of the cable core. The stainless steel belt is a lipped stainless steel belt with the lipped width of 5mm and the height of 2.5mm, and firstly hot melt adhesive is injected into the joint of the lipped steel belt and then the lipped stainless steel belt is wrapped by multiple stainless steel wires with the diameter of 0.4mm. According to the rat-proof optical cable provided by the invention, under the premise of ensuring structural strength and tensile performance, the bite of rats is effectively prevented, the preparation method is simple and convenient, and the outer sheath used by the optical cable has the effects of wear resistance, low smoke, non halogen, and rat control.

The invention belongs to the field of cables, and particularly relates to a high temperature and high voltage resistant cable. The cable comprises a conductor and a sheath layer externally wrapping the conductor, the sheath layer is orderly composed of an insulating layer, a mica belting layer, a low-smoke halogen-free flame retardant polyolefin inner jacket, a woven shielding layer, a low-smoke halogen-free flame retardant polyolefin outer jacket and an outer sheath from inside to outside; material of the insulating layer and material of the outer sheath both are modified fluoroplastic for cables, and the modified fluoroplastic for cables comprises the following constituents in parts by weight: 60-80 parts of polytetrafluoroethylene, 10-20 parts of wear-resistant agent, 5-10 parts of fire retardant, 7-16 parts of plasticizer, 5-9 parts of filler, 1-3 parts of antioxidant, 1-3 parts of paraffin oil, 0.1-0.2 parts of ratproof master batch and 0.1-0.2 parts of temite preventing master batch. The structure above can perform multi-angle protection for the cable, and can effectively reduce influence of high temperature and high voltage generated when conducting the conductor or outside severe environment on service life of the cable.

The invention discloses a three-core cable preventing biting of mice and termites. The three-core cable comprises three sets of wire cores. Each set of wire core comprises a copper core conductor which is arranged in the internal layer and a halogen-free low-smoke polyolefin insulating layer which is arranged in the external layer. The periphery of the three sets of wire cores is provided with a copper tape shielding layer, a drainage layer, a polyethylene resin internal protective layer, a carbon fiber layer, a galvanized steel tape armored layer and an external protective layer which are arranged from inside to outside in turn. Termite repelling agent microcapsules and mouse repelling agent microcapsules are evenly arranged in the external protective layer. Elastic waterproof ointment is filled between the three sets of wire cores and the copper tape shielding layer. The termite repelling agent microcapsules and the mouse repelling agent microcapsules are arranged in the external protective layer so that the effect of repelling the mice and the termites can be realized, and the service life of the cable can be enhanced without accident; besides, the galvanized steel tape armored layer is arranged so that the pressure resistance of the cable can be increased and biting of the mice and the termites can also be prevented; and the cable also has high strength and great waterproof and anti-ultraviolet effect.

The invention discloses a power distribution cabinet operation monitoring system based on big data. The system comprises two audible and visual alarms, a controller, a fire extinguisher, two electromagnetic valves, a sensor, an exhaust fan, a monitor, an electric cabinet air conditioner, a wireless module, a server terminal and an access control module. The audible and visual alarms are respectively used for driving close organisms of the power distribution cabinet and monitoring and reminding background personnel. Fire extinguishers are used for storing dry powder, and the two electromagnetic valves are respectively used for controlling output of the dry powder of the fire extinguishers and discharge of liquid in the power distribution cabinet. The beneficial effects of the invention arethat: environment of the power distribution cabinet is monitored more comprehensively; corresponding solutions can be adopted for problems; the exhaust fan and the electric cabinet air conditioner work alternately, so that the purpose of reducing energy consumption is achieved, the problem that information data is lost due to the fact that the data cannot be uploaded in real time can be prevented, access control recognition is still effective under the condition of network disconnection, and access control information is rapidly synchronized.

The invention provides an underground cable protective device convenient for maintenance and belongs to the technical field of electric power facilities. The device comprises a cable, a protection mechanism used for protecting the cable and a support mechanism arranged below the protection mechanism. The protection mechanism comprises a plurality of protection tubes and a plurality of three-way connectors connected with the protection tubes. A plurality of flexible rubber strips are arranged on both sides of the inner part of each protection tube. First joints, perpendicular to the protection tubes, of the three-way connectors are provided with caps. The support mechanism comprises a base plate and side plates arranged on the two sides of the base plate. The lower portions of the side plates are provided with several rotating shafts. Several cover plates are arranged on the side plates. The lengths of the cover plates are equal to the lengths of the protection tubes. The both ends of the cover plates are semi-circular. The protection mechanism and the support mechanism are both of non-metallic materials. The device of the invention can protect underground cables, provides convenience for maintenance after faults occur to the underground cables, can effectively reduce the construction intensity of the underground cables and can raise the construction efficiency.

The invention relates to fruit bags special for winter peaches and application of the fruit bags in winter peach cultivation, storage and transportation. Inner bags of the fruit bags are made by pressing white wax paper coated with wax on a single face and foam grids, and the outer surface wax layers of the inner bags are outward and are pressed together with the foam grids. In winter peach cultivation, the special fruit bags are adopted for bagging management at flowering and fruit-bearing stages and are matched with a special winter peach pruning method, water and fertilizer integrated bag-controlled slow release fertilizer and other cultivation techniques or measures so as to achieve high-quality and high-yield winter peach production. In addition, the phenomenon that fruit surfaces are scratched during transportation applying the fruit bags special for winter peaches and paper bag picking and transportation and accordingly fruit quality and other problems are influenced can be effectively avoided.

The invention discloses a multifunctional teacher desk for ideological and political education. The teacher desk comprises a desk top, a bookshelf, a display screen, a mouse supporting plate and a computer placing cabinet, supporting walls are arranged on the front side and the right side of the bottom of the desk top respectively, the computer placing cabinet is arranged on the left side of thebottom of the desk top, and a computer is arranged in the computer placing cabinet; a protective cover is arranged in the middle of the upper portion of the desk top, and the display screen is arranged in the protective cover; the bookshelf is arranged on the left side of the protective cover, and a fixed clamp is arranged on the bookshelf; the mouse supporting plate is arranged on the right sideof the protective cover, a rubber pad is arranged on the mouse supporting plate, and a mouse is arranged on the rubber pad. The teacher desk has the advantages that when the teacher desk is used, a gear and a rack can be driven by a second motor to rotate, so that the angle of the display screen is adjusted to adapt to teachers with different heights and behavior habits; the mouse supporting platecan move up and down through a first motor and a screw rod to be conveniently used by the teachers with different heights and behavior habits; the teachers do not need to bend down when the mouse isused, and the waists of the teachers are effectively protected.

A door seal die for a washing machine comprises an injection piece die cavity composed of an upper die body, a first upper die core, a second upper die core, a lower die body, a lower die core, a middle die body and a middle core. The middle core is arranged between the upper die body and the lower die body. The first upper die core and the second upper die core are arranged on the upper die body. The lower die core is arranged on the lower die body. The middle core is connected with the upper die body through a pull rod. An upper Haff module is arranged on the middle die body. A lower Haff module is arranged under the middle die body. Compression springs are arranged in an upper sliding block, a lower sliding block and the middle die body and used for moving the sliding blocks outwards for opening. An injection nozzle is formed in the upper die body, and glue injection is conducted from the lower end of the die, so that the situation that an injected glue material carrying impurities in a runner is stored in a sealing lip can be prevented effectively, the defects of the impurities and air clog which are likely to happen to the sealing lip at the glue injection end of the upper end glue injection process are overcome, and the quality of the sealing lip of the key portion of a product is guaranteed; and guide pins are arranged on the upper die body and the lower die body correspondingly, the Haff sliding blocks are guided to be opened and closed, the friction force is small, thorns are not likely to be generated, the mechanical operation reliability is high, the die combination precision can be kept for a long time, and the service life is long.

The invention discloses an innovative multi-protective function cable. The innovative multi-protective function cable comprises a conductor layer, a silica rubber layer arranged at the exterior of the conductor layer, an anti-biting layer arranged at the exterior of the silica rubber layer and an anti-freezing rain layer arranged at the exterior of the anti-biting layer, wherein the conductor layer comprises at least one conductor, wherein any one of the conductors is coated with a heat insulation layer, wherein the heat insulation layer is glass moving fabric or a casing which has been subjected to MQ silicon resin impregnation. The anti-biting layer comprises the following two groups of components in part by weight: 1) group A: 100 parts of silicon rubber, 10 parts of anti-feedant compound, 25 parts of inorganic filler, and 6 parts of hydroxyl silicone oil; and 2) group B: 0.5 to 0.8 part of vulcanizing agent. With the innovative multi-protective function cable of the invention adopted, rodents can be prevented from biting the cable, and therefore, the cable can adapt to a larger environment temperature range, and the application range of the cable can be extended, and the quality of the cable can be improved, and creepage trace can be detected in real time, and glazed frost, supercooled water, freezing rain and snow can be prevented from being attached on the surface of the cable.

The invention relates to an elastic seal ring, the top and the bottom of the inner ring surface of which are respectively distributed with an aperture extending along circumferential direction; an air conducting groove for communication is arranged between the top aperture and the bottom aperture; the section of the inner ring surface of the seal ring is E-shaped; a semi-O-shaped convex integrated with the ring body is arranged between the top and the bottom working surfaces of the ring body and the corresponding top and bottom apertures. The seal ring adopted by the invention has double functions of gauging sealing and active sealing, which can compensate to cause a second sealing when the situation that gauging sealing is failed for abnormal sealing conditions which do not meet the design appear, so as to ensure that the sealing structure has larger 'redundancy' and enhanced reliability; therefore, the seal ring can be installed and used in a novel self-sealing flange and existing flanges and can also be used as the seal ring of pressure air pipe sealing and connecting except a flange joint and is characterized by reasonable structure, convenient use, low cost and reliable sealing.

The invention provides a knee joint prosthesis, which comprises a tibia platform, a femur condyle component and a spacer component, wherein the femur condyle component is positioned above the tibia platform and comprises an inner condyle joint surface and an outer condyle joint surface, and the inner condyle joint surface and an outer condyle joint surface have a height difference H; the spacer component is positioned between the tibia platform and the femur condyle part and comprises an inner side spacer cooperated with the inner condyle joint surface, and an outer side spacer cooperated withthe outer condyle joint surface; a position, which corresponds to the outer side spacer, on the upper surface of the tibia platform is provided with a first spherical convex surface; the outer side spacer is movably arranged on the prosthesis platform; and in addition, the lower surface of the outer side spacer is provided with a first spherical concave surface cooperated with the first sphericalconvex surface. According to the technical scheme of the invention, the problem in the relevant art that the knee joint prosthesis is likely to abrade can be effectively solved.

The invention discloses a TPU sheath material for charging cables as well as preparation and application of the TPU sheath material. According to the technical scheme, thermoplastic polyurethane (TPU)is adopted as a matrix, a modifier, a compatilizer, a halogen-free flame retardant, a flame retardant synergist, a lubricant, an antioxidant and a rat-proof agent are added, all the components are matched with one another to achieve a synergistic effect, so that the cable sheath material can ensure the original good processability and elasticity of thermoplastic polyurethane (TPU) and has good mechanical properties, heat resistance, low temperature resistance, wear resistance, chemical liquid resistance, water resistance and flame retardancy, the cracking resistance of the TPU sheath materialis also significantly improved, and the material is effectively prevented from being bitten by rats and has an excellent surface matte effect.

The invention discloses an automatic system used for removing burrs on a side edge of a three-dimensional space of an injection molded part. The automatic system comprises a control panel, an electrical control system, a workpiece positioning jig, a mechanical arm and a tool mounted at the tail end of the mechanical arm, wherein a floating regulating mechanism used for regulating the position of acutting edge of the tool is mounted between the mechanical arm and the tool. According to the automatic system disclosed by the invention, burr-removal processing is performed on the injection moldedpart through the mechanical arm, so that removal on the burrs on the side edge of the three-dimensional space can be realized, and therefore, production efficiency is improved, and product processingquality is improved. The workpiece positioning jig adopts a polyformaldehyde profile modeling cushion block, so that a profile modeling area is great, and the appearance surface of the injection molded part can be protected; the workpiece positioning jig is connected with a clamp mounting frame through a pin and a bolt, so that the workpiece positioning jig can be quickly changed; and burr-removal processing on different injection molded parts can be realized by switching processing procedures through the control panel. The tool is mounted on the floating regulating mechanism, so that chewing injuries, caused by changes of shape of the injection molded part, on parts during burr-removal processing are avoided.

The first purpose of the invention is to provide a forging and pressing method of steel rail heel; a steel rail heel comprises a pre-forging heel and a final forging heel; the pre-forging heel comprises a first section, a second section, and a third section; the final forging heel comprises a fourth section and a fifth section; the method specifically comprises the following steps: implementing a first stage forging and pressing after heating the first section, the second section and the third section, wherein the first two sections are molded by forging and pressing, the third section is pre-deformed; and implementing a second stage forging and pressing after heating the last three sections. The provided forging and pressing method adopts a measure of molding twice, thereby being able to solve the defect that the size of the molded final forging heel is unqualified, as well as greatly reducing the molding force in the entire steel rail heel product molding process. The second purpose of the invention is to provide a three-position molding die with a simple integral structure; a second upper die section inside a pre-forging rail molding cavity and a first pre-forging insert inside a final forging molding cavity are both in detachable structures, thereby meeting different requirements to the three-position molding die in the twice forging and pressing process; the three-position molding die is convenient to be assembled, and strong in practicability.

The invention discloses an insect-bite-preventing reel cable for an oil platform. The cable comprises a cable core, wherein the cable core comprises a cross-shaped nylon framework, the four ends of the cross-shaped nylon framework are respectively provided with a hole, the holes are filled with chili powder, four right-angle gaps of the cross-shaped nylon framework are respectively provided with a fan-shaped conductor, each fan-shaped conductor is formed by twisting and extruding seven or more tinned copper wires, a fluoroplastic insulating layer is wrapped on each fan-shaped conductor, and a copper braid shielding layer and an outer sheath are wrapped on the cable core in sequence. The insect-bite-preventing reel cable for the oil platform has the advantages of being high in electrical insulation performance, mechanical performance and physical performance, high in flame retardance, resistant to ageing and water, environmentally friendly and the like; the cable can be effectively prevented from being bitten by mice and corroded by termites, and the probability that the cable is further damaged by the mice and the termites is reduced by the chili powder; the cable is more solid and more tough due to the cross-shaped nylon framework, and the cable can operate safely and reliably even if the outer sheath of the cable is damaged by the mice and the termites or external force.

The invention discloses a start-up method of a finishing rolling unit of hot-rolled wide-band steel. The start-up method of the finishing rolling line for hot-rolled wide-band steel includes the following steps: controlling the hydraulic cylinders of the rolling mills of the finishing rolling line to perform static pressing, so that there is static pressure between the work rolls and the backup rolls of the rolling mills; When the static pressure reaches the set value, the hydraulic cylinders of each rolling mill are controlled to stop pressing, and then start normally. According to the present invention, by increasing the static pressure between the work rolls and the backup rolls before the starting of the finishing rolling unit, the start-up conditions of the rolling mill can be improved, and the disadvantage of insufficient power of the work rolls to the backup rolls can be overcome, thereby effectively avoiding major problems such as roll gnawing. equipment accident.

The invention discloses an anti-mouse telephone lead-in line which comprises two circular copper conductors. The two conductors are intertwisted for forming a twisted wire pair. A polyethylene layer internally comprises a plurality of air holes. The volume ratio between the plurality of air holes and the polyethylene layer is 40-60%, and the air holes are filled with nitrogen gas. A polyvinyl chloride layer coats the external surface of an aluminum foil. A polyethylene sheath layer coats the external surface of the polyvinyl chloride layer. An intermediate tensile layer is arranged between the polyvinyl chloride layer and the polyethylene sheath layer. The intermediate tensile layer is composed of the components of polyamide-6 resin, poly(tetramethylene adiloamide), ethene and norbornylene copolymer, maleic anhydride grafted amorphous polyolefin, N,N'-di-beta-naphthyl-p-phenylenediamine, polyethylene wax, polyethylene glycol, polyethylene glycol and acetin. The anti-mouse telephone lead-in line has advantages of reducing an interference to signal transmission and remarkably improving a tensile strength.

The invention discloses an optical fiber coupler, and relates to the technical field of optical fiber couplers, the optical fiber coupler comprises an optical fiber coupler body, two sides of the optical fiber coupler body are fixedly connected with mounting frames, the mounting frames are also provided with rat-proof mechanisms, each rat-proof mechanism comprises a box body, the box body is provided with a through cavity, and an optical fiber is inserted through the cavity; a plurality of movable bulges are arranged at the bottom of the cavity and are distributed in a rectangular array; a plurality of first air bags are positioned under the plurality of movable bulges; a plurality of first air bags are communicated with at least two second air bags; an exhaust channel is communicated withthe second air bags, and a piston plate and a connecting rod are arranged in the exhaust channel; a lower pressing plate is fixedly connected with the connecting rod, the lower pressing plate is located at the top of the cavity, and sharp conical teeth are densely distributed on the lower surface of the lower pressing plate; and an elastic lifting lug is arranged at the top of the cavity, and theelastic lifting lug is used for fixing the lower pressing plate.

The invention relates to an anti-gnawing insect-expelling composite protective agent special for jasmine flowers. The composite protective agent is prepared by mixing the following raw materials in parts by mass: 5-7 parts of dried blood of livestock and poultry animals; 10 to 15 parts of coffee grounds; 5-7 parts of rhizoma alpiniae officinarum; 8-10 parts of folium desmoris chinensis; 8 to 10 parts of cortex meliae; 8-10 parts of brucea javanica and 5-7 parts of Chinese fevervine herb and root; non-toxic biological raw materials and waste are used as raw materials, the manufacturing cost islow, use is convenient, livestock can be prevented from biting jasmine plants, and the effects of insect prevention and expelling are achieved.

The invention relates to a compatible technology for thermal expansion displacement adjustment and control over a hot water main pipeline. According to the compatible technology, the main pipeline, branch output pipelines distributed on the main pipeline and branch input pipelines connected with the branch output pipelines are included; the branch output pipelines comprise input first connectors,input second connectors and branch thermal expansion redundancy devices, wherein the main pipeline is connected to the input ends of the input first connectors, the branch input pipelines are connected to the output ends of the input second connectors, and the branch thermal expansion redundancy devices are connected between outlets of the input first connectors and inlets of the input second connectors; and the branch thermal expansion redundancy devices comprise input connection discs arranged at the outlets of the input first connectors, input end face sealing rings arranged at the backs ofthe input connection discs, input axial sealing rings arranged on the outer side walls at the outlet ends of the input first connectors and intermediate flexible connection assemblies connected between the outlets of the input first connectors and the inlets of the input second connectors. The compatible technology has reasonable design, a compact structure and convenient use.

The invention discloses a colorful anti-ultraviolet polyethylene cable outer sheath material. The material is prepared from 25 to 42 parts by weight of high density polyethylene, 12 to 22 parts by weight of linear low density polyethylene, 2 to 5 parts by weight of colorful master batches, 1 to 3 parts by weight of a lubricant, 0.2 to 0.5 part by weight of an antioxidant, 1 to 3 parts by weight of an ultraviolet absorber, 8 to 12 parts by weight of basalt fibers, 3 to 8 parts by weight of glass fibers, 2 to 4 parts by weight of bifenthrin, 6 to 12 parts by weight of toluene, and 5 to 8 parts by weight of capsaicin. The colorful anti-ultraviolet polyethylene cable outer sheath material has excellent anti-ultraviolet and anti-aging performances and excellent mechanical properties, can prevent fading of the cable for a long time, can prevent rat and termite eating and can prolong an optical cable service life.

The invention belongs to the field of communication facilities, and concretely relates to a safety protection cable trench for a communication base station. The trench comprises a trench body and a cover plate; a plurality of cable racks are mounted on the side walls of the two sides of the trench body at equal intervals; a cylindrical shell is fixedly mounted at the bottom of the trench body; a sliding block is connected to the inner side wall of the cylindrical shell in a sliding manner; the upper end of the sliding block is fixedly connected with the top surface of the cylindrical shell through an elastic corrugated pipe; the elastic corrugated pipe is filled with a thermal expansion and cold contraction medium; and a vertically-arranged lifting rod is fixedly connected to the upper surface of the sliding block, the upper end of the lifting rod penetrates through the top face of the cylindrical shell, a plurality of supporting plates are installed on the side wall of the lifting rodat equal intervals, the plurality of supporting plates extend to the positions above the plurality of cable frames correspondingly, and a sponge water absorption layer is bonded to the lower surfacesof the supporting plates. According to the cable trench, the cable can be cooled, meanwhile, the water removal effect is achieved, manual water removal and cooling work is not needed, and the maintenance cost of the cable trench is reduced.