723results about How to "Weight increase" patented technology

The invention discloses a wall scraping type film evaporator, which relates to the technical field of evaporators, and comprises a barrel body, a heating barrel cover arranged on the outer wall of the barrel body, a top cover arranged at the top end of the barrel body and a bottom cover arranged at the bottom end of the barrel body, the liquid distribution disc is arranged in the top cover, is used for detecting the sticky state of the waste liquid according to the weight and is self-adaptively lifted; the first scraping plate and the second scraping plate are arranged on the inner wall of the barrel body and are used for identifying the sticky state of the waste liquid and adaptively switching the two states of efficient scraping wall evaporation and accelerated discharging, and the switching mechanism is used for controlling the switching of the first scraping plate and the second scraping plate according to the lifting of the liquid distribution disc. Lifting is carried out through the weight borne by the upper surface of the liquid distribution disc, the switching mechanism controls the first scraping plate and the second scraping plate to be switched for use, and therefore the first scraping plate or the second scraping plate is switched for film scraping evaporation in a self-adaptive mode according to the content of sticky matter in waste liquid, and the film scraping effect of the waste liquid and the discharging efficiency of the sticky matter are improved.

The invention belongs to the technical field of mariculture, and particularly relates to a flexible deep sea truss aquaculture net cage which comprises a flexible net cage system, a stock bin barrel system is arranged in the middle of the flexible net cage system, and an overwater suspension corridor assembly is arranged between the top end of the flexible net cage system and the top end of the stock bin barrel system. An anchor cable system is arranged on the outer side of the circumference of the flexible net cage system. By designing the flexible net cage system, the weight of the culture net cage is increased by filling viscoplastic filling materials through the bottom annular thick supporting pipes and the stand columns, the gravity center of the net cage is reduced, and the safety of the culture net cage in the putting process and the stability in actual operation are improved; other supporting pipes, supporting pieces, stand columns in the stock bin barrel system and transverse annular supporting pipes are filled with seawater, net cage throwing is assisted, and balance weight is simple; due to the integral structural design, the net cage has seawater corrosion resistance, is firm in structure, can bear the impact of large waves and seawater, has certain water permeability and can keep the circulation of seawater.

The invention belongs to the technical field of biological organic fertilizer production, and particularly relates to a multifunctional biological organic fertilizer for enhancing soil microbial activity and a preparation method thereof. The multifunctional biological organic fertilizer for enhancing soil microbial activity is prepared from the following raw materials in parts by mass: 40-60 parts of an organic fertilizer base material, 10-15 parts of a plant extract, 3-6 parts of modified nano-hydroxyapatite, 2-6 parts of a compound fermentation inoculant and 2-5 parts of a surfactant, the multifunctional biological organic fertilizer can improve secondary salinization greenhouse soil, increase the content of organic matters, reduce the morbidity of tomato soil-borne diseases, and increase the fruit number of a single plant, the weight of a single fruit and the acre yield of tomatoes.

The utility model relates to the technical field of vibration motors, in particular to a horizontal linear vibration motor, which comprises a shell with an accommodating space, a vibrator assembly, an elastic piece, a stator assembly and a cover plate, and is characterized in that the vibrator assembly comprises a mass block, magnetic steel and a damping piece, and is suspended in the shell through the elastic piece; the mass block comprises an integrally-formed cuboid body, the surface of the side, facing the cover plate, of the body is concavely provided with a receding coil and a groove penetrating through the body in the width direction, the center of the groove is provided with a square blind groove for containing the magnetic steel, and the blind groove forms the four walls of the mass block. The long side wall of the mass block is vertically and concavely arranged from the free end face of the mass block and penetrates through the long side wall to be used for installing a through groove of the damping piece, a first boss is horizontally and convexly arranged on the edge of the bottom of the long side wall, facing one side of the shell, of the body, and the groove forms a second boss on the free end face of the short side wall of the mass block. The performance of the horizontal linear vibration motor is improved, and the vibration effect of the motor is enhanced.

The utility model relates to the field of automobile parking space fire fighting equipment, and particularly discloses an intelligent fire extinguishing device for an automobile parking space, which comprises a fireproof cover, a support, a fire fighting nozzle, a temperature sensor, a smoke sensor and a lifting assembly, the fireproof cover is fixedly mounted right above the parking space through the support, and an opening is formed in the bottom of the fireproof cover; the fire-fighting sprayer, the temperature sensor and the smoke sensor are all installed in the fireproof cover, the lower end of the fireproof cover is sleeved with a first fixing frame, the first fixing frame is connected with the lifting assembly and moves up and down under the action of the lifting assembly, when the first fixing frame makes contact with or gets close to the support, the fireproof cover is completely folded, and when the first fixing frame makes contact with the parking space, the first fixing frame moves up and down. The fireproof cover is unfolded, and a closed space is formed between the fireproof cover and the parking space. The fire-proof cover can be used for isolating a vehicle on fire from surrounding vehicles or equipment, fire spreading is avoided, meanwhile, a water pool can be formed in the fire-proof cover to immerse a battery, and the final fire extinguishing purpose is achieved.

The invention discloses a high-temperature disinfection device for medical instruments, and relates to the technical field of medical instruments, the high-temperature disinfection device comprises a high-temperature box, the top of the high-temperature box is rotatably connected with a rotating pipe, the rotating pipe is fixedly communicated with a plurality of fixed pipes, and the plurality of fixed pipes are slidably connected with sliding rods. Through the arrangement of the sliding unit, a motor drives a rotating pipe to rotate through a gear column and a rotating gear, the rotating pipe drives a plurality of fixed pipes, a plurality of sliding rods and a plurality of hooks to rotate, the rotating hooks drive cutters and scissors to rotate for disinfection, and when a rotating door is opened, the rotating door drives an extrusion block to be away from the fixed rods; and when the reset spring drives the movable column and the arc-shaped strip to move downwards, and the sliding rod drives the cylindrical block to move on the arc-shaped strip, the arc-shaped strip extrudes the cylindrical block and the sliding rod to move outwards, so that the sliding rod drives the hook to move out of the high-temperature box, the hook can be automatically sent out of the high-temperature box when the rotating door is opened, and material discharging and material taking are facilitated.

The invention discloses a human skin-like super-resolution tactile sensor and a tactile reconstruction method. According to the sensor, by referring to the bionic mechanism that different types of receptors are embedded in soft tissues of human skin, functional bionics of various human receptors (such as Pareny bodies, Meisner bodies and the like) are realized by embedding different types of sensing units in different arrangement modes in soft silica gel materials, and further, the sensor can be used for realizing the functional bionics of various human receptors (such as Pareny bodies, Meisner bodies and the like) through a tactile reconstruction method. And large-area and super-resolution sensing of forward pressure, shearing force, torsional force and the like is realized. The sensor is characterized in that the sensor focuses on bionics of human skin tissue functions rather than bionics of human body receptor functions, that is to say, by selecting a soft silica gel material with the maximum force traction coupling effect, the same external contact can cause as many sensing units to generate responses as possible; therefore, human skin-like large-area and super-resolution tactile perception is realized.

The invention provides a base station antenna, the base station antenna comprises a reflecting plate and a phase shifter, the reflecting plate is provided with a groove, the phase shifter comprises a phase shift circuit, a phase shift medium and a radio frequency ground, the phase shift circuit is covered on an opening of the groove in an insulation manner, the groove wall of the groove forms the radio frequency ground, and the radio frequency ground is arranged in the groove. The phase shift medium comprises a first sliding medium, the first sliding medium is arranged in the groove, and the first sliding medium moves relative to the phase shift circuit to adjust the phase. According to the base station antenna, the phase shifter is integrated on the reflecting plate, and particularly, the phase shifting medium is arranged in the groove in the reflecting plate, so that the size of the antenna is remarkably reduced, the antenna is more compact and light, and the internal space layout of the antenna is optimized.

A trapper for stored grain pests in a grain pile belongs to the technical field of stored grain pest trapping and comprises a trapper mounting seat, a trapper main body pest trapping tube, a trapper camera module and a trapper bottom pest collecting conical head. The trapper mounting seat, the trapper main body insect trapping tube, the trapper camera module and the trapper bottom insect collecting conical head are sequentially connected from top to bottom; insect trapping holes for pests to pass through are formed in the cylinder wall of the upper end of an insect trapping pipe of the trap body, an attractant containing bottle and a bottle cap are arranged in the lower end of the trap body, emission holes are formed in the bottle cap, and a miniature electronic liquid level meter is arranged in the attractant containing bottle. The insect trapping device is simple in structure and easy and convenient to operate, attractants can be added to improve the insect trapping rate, the residual quantity of the attractants can be pre-warned, the inner insect trapping condition can be observed in real time, meanwhile, the insect trapping device is convenient to install and use, functions are convenient to expand and upgrade, and the insect trapping device is suitable for industrial production and application.

A connecting hole and a damping hole which are sequentially communicated are formed in one end of the boring rod, one end of the boring head is connected into the connecting hole, the damping assembly is arranged in the damping hole, the damping assembly comprises a weight increasing module and two elastic pieces which abut against the two sides of the weight increasing module respectively, one elastic piece abuts against the boring head, and the other elastic piece abuts against the other end of the boring rod. The weight of the weight increasing module is larger than that of the hole forming part, and the hole forming part is the part removed from the boring rod and used for forming the damping hole. According to the boring cutter, the vibration of the boring head and the boring rod is counteracted through the combined action of the weight increasing module and the elastic piece, the resonance among the boring head, the boring rod and the metal workpiece is eliminated, the vibration generated by the boring cutter in the boring process is reduced, and the machining quality and the machining efficiency of boring are improved. The weight of the weight increasing module is larger than that of the hole forming part, so that the weight of the boring rod is increased, vibration transmitted to the boring rod by the boring head is weakened through weight increasing of the boring rod, and stable boring of a boring cutter is facilitated.

The utility model provides a piezoelectric power generation device based on wave energy. The piezoelectric power generation device comprises a shell, a pin roller, a rotating shaft, a movable magnet, a fixed magnet, a piezoelectric plate and a connecting shaft, the piezoelectric plate is fixed on the inner side wall of the shell, and the fixed magnet is fixed on the piezoelectric plate; the movable magnet is arranged in the middle in the shell and spaced from the fixed magnet, and the polarities of the ends, close to each other, of the movable magnet and the fixed magnet are the same; the rotating shaft is arranged in the shell, one end of the connecting shaft is arranged in the shell, one end of the rotating shaft is fixed to the movable magnet, the other end of the rotating shaft is fixed to the end, in the shell, of the connecting shaft, the peripheral wall of the middle of the connecting shaft is rotationally connected with the side wall of the shell, and the other end of the connecting shaft extends out of the shell and is fixedly connected with the end of the roller. The pin roller is used for generating circumferential rotation through wave energy, and when the pin roller rotates, the rotating shaft and the movable magnet are sequentially driven to rotate. The utility model has the advantages of simple structure, small size and relatively low cost.

The invention relates to the field of silk processing technology, and specifically discloses a silk yam fragrance and weight enhancement dyeing process and equipment, comprising the following steps: step one: putting silk into a plasma processor, performing low-temperature treatment, and enhancing the coloring rate; step two: mixing plant extract and water in a ratio of 1:10 to prepare a dyeing liquid, wherein the plant extract is yam liquid; step three: pouring the dyeing liquid into an ultrasonic container, and then putting silk in to soak for 2-5 minutes; step four: then placing the soaked silk on a steam rack, steam rising to the lower surface of the silk, and placing a solar lamp above the silk to dry the upper surface of the silk, wherein the solar lamp is a lamp that imitates sunlight; step five: repeating the above steps three times; step six: mixing plant extract, water, rose extract, and thickening liquid in a ratio of 1:5:1:1 and adding them to a coating machine, and then putting the silk into the coating machine for coating operation; repeating step 4 for drying operation, and finally making Xiangyun yarn.

The utility model relates to the field of automobile fire-fighting equipment, and particularly discloses a movable automobile intelligent fire extinguishing device which comprises a fireproof cover, a fire-fighting sprayer, two lifting assemblies and a telescopic arm, the bottom of the fireproof cover is provided with an opening, the lower end of the fireproof cover is provided with a lower fixing frame, and the upper end of the fireproof cover is provided with an upper fixing frame. The bottom of the fireproof cover is connected with the lower fixing frame, the top of the fireproof cover is connected with the upper fixing frame, the fireproof cover is driven by the lifting assemblies to be folded on the lower fixing frame or unfolded to form a closed space, the telescopic arm is located between the two lifting assemblies, and the two ends of the telescopic arm are connected with the lower fixing frame and the fire fighting truck respectively. The fire-proof cover is combined with a fire fighting truck, the fire-proof cover can be used for isolating an on-fire automobile from surrounding automobiles or equipment, fire spreading is avoided, meanwhile, a water pool can be formed in the fire-proof cover to immerse a battery, the final fire extinguishing purpose is achieved, and compared with a water gun fire extinguishing mode, the fire extinguishing efficiency can be improved, and fire extinguishing safety can be ensured; and water resources are greatly saved.

The utility model relates to an anti-displacement intelligent well lid which comprises a well lid body and a detection device, and the detection device is arranged below the well lid body. The well lid body comprises a bottom plate, a fixing device, a top plate, a supporting column, a control hole and a hole cover, the fixing device is arranged above the bottom plate and comprises a base, a gear, a sliding groove and a rack, the base and the sliding groove are arranged above the bottom plate side by side at intervals, the gear is rotationally arranged on the base, and the rack is slidably arranged in the sliding groove; a plurality of supporting columns are arranged between the bottom plate and the top plate; the detection device comprises a processor, a connecting rod and a water level gauge, the processor is arranged on the bottom plate, one end of the connecting rod penetrates through the bottom plate and communicates with the processor, and the other end of the connecting rod is connected with the water level gauge. The fixing device is arranged to prevent the well lid body from displacing to damage pedestrians and vehicles, and the detection device is further arranged to enable maintenance personnel to know the water level condition in a well in time.

According to the platform lifting type breaking-off device, plate dividing supports are arranged above stand columns, a feeding and discharging supporting plate is transversely arranged at the bottom between the stand columns, a plate breaking-off assembly is transversely arranged on the inner side between the material dividing supports at the two ends, and lifting wheel sets are arranged at the upper ends of the material dividing supports; the upper end of the lifting pull rod penetrates through the lifting wheel set through a lifting chain to be fixedly connected with the four corners of the feeding and discharging supporting plate in a hoisting mode, the plate breaking assembly comprises a clamping assembly and a separating assembly, and a blank is moved up and down, and the plate breaking assembly is fixed to the upper end of the device. Therefore, the high-strength and high-stability blank breaking-off effect of breaking-off assemblies is achieved, stable and efficient stacked blanks can be obtained, and overall transportation of follow-up blanks after breaking-off is completed is facilitated.

The utility model discloses a hoisting assembly for quickly fixing spare and accessory parts, which relates to the technical field of automobile production and comprises a base, a plurality of first electric push rods are mounted on the base, a support plate ascends and descends through the first electric push rods, and a support rod is fixed on the support plate; the top end of the supporting rod is connected with the rotating frame through the connecting groove to achieve flexible rotation. A limiting groove is formed in the right side of the rotating frame, and the built-in sliding block can slide along the limiting groove; a second electric push rod, a driving mounting plate and a two-way electric push rod are arranged in the sliding block, and the two-way electric push rod drives clamping plates and lifting hooks to meet different lifting requirements; a first motor cavity and a rotating rod cavity are formed in the supporting rod, and a rotating unit is arranged in the supporting rod to accurately control the position of the rotating frame; a counterweight unit is arranged on the left side of the rotating frame, the position of a counterweight block is adjusted through a second rotating motor, dynamic balance is achieved, vibration is reduced, and operation stability and safety are improved; an adjusting unit is arranged on the right side to finely adjust the position of the slider; in addition, weighting blocks are additionally arranged at the bottoms of the supporting rods, bottom weight is enhanced, and overall stability is improved.

The invention discloses lightweight aggregate based on ardealite and multi-source solid waste as well as a preparation method and a utilization method of the lightweight aggregate, and aims to solve the problems of low utilization rate of the ardealite and the multi-source solid waste, high energy consumption and high carbon emission of a utilization scheme, insufficient long-term water stability of a recycled product and the like in the prior art. The phosphogypsum and the multi-source solid waste are gelatinized by using the alkali activator, so that the solid waste generates viscosity to form a polymerized gel material, and the gelatinization process is realized by using the activity of the industrial solid waste, so that the lightweight aggregate with high strength and good performance is obtained. And meanwhile, the lightweight aggregate is classified in a cascade manner according to different strength grades of the lightweight aggregate, so that the practicability of the recycled product is improved.

The invention discloses a garbage disposal truck for kitchen garbage, and relates to the technical field of garbage disposal trucks. A hopper mechanism is arranged at one end of the garbage truck carriage, the hopper mechanism comprises a hopper body, and a draining plate is fixedly connected to the middle of the lower end of the hopper body; wherein a compacting mechanism is arranged in the middle of the hopper mechanism, the compacting mechanism comprises a lifting plate, the lower end of the lifting plate is rotationally connected with a rotating scraper, and the upper end of one side of the rotating scraper is rotationally connected with a filter pressing plate; wherein one side of the lifting plate is rotatably connected with a material pushing plate, the lower end of one side of the material pushing plate is fixedly connected with a guide plate, the bottom of the guide plate is slidably connected with a compaction plate, and the scraping plate is rotated to drive the filter pressing plate to rotate towards the compaction plate, so that the kitchen waste is compressed and compacted, and the occupied space of the kitchen waste is reduced; meanwhile, sewage in the kitchen waste is separated, and the situation that the sewage drips in the transportation process is reduced.

The utility model discloses a feeding rotary table suitable for a carton bag supplementing machine, and relates to the technical field of packaging and material arranging machinery. According to the utility model, the package blocking mechanisms are arranged at the bottoms of the feeding bins on the feeding turntable, the package blocking plates of the package blocking mechanisms penetrate through the feeding turntable to extend upwards, and in the rotating process of the feeding turntable, the package blocking plates extend out and are higher than the bottoms of the troughs of the feeding bins so as to block strip packages in the feeding bins; the carton in the feeding bin is prevented from being thrown out of the feeding bin under the action of centrifugal force; a feeding driving part is arranged at the feeding station corresponding to the feeding bin, a discharging driving part is arranged at the discharging station corresponding to the feeding bin, the feeding rotary table body stops rotating, and the feeding driving part and / or the discharging driving part drive the bag blocking plate to descend through the transmission assembly so that the strip bags can enter the feeding bin or be output from the feeding bin. Compared with an existing structure, the feeding rotary table is more simplified in structure and low in equipment cost.

The invention belongs to the technical field of poultry feed additives, provides a feed additive for improving growth and skeleton health of broiler chickens in a chronic stress state and application of the feed additive, and particularly relates to new application of the feed additive in broiler chicken feed additives with high-density stress and heat stress. And the used lipoic acid and chromium methionine are safe, free of drug resistance, free of adverse reaction and low in price. The feed additive comprises lipoic acid and chromium methionine, and the addition amount of the lipoic acid is 300mg / kg; and chromium methionine is 400 [mu] g / kg. The additive can influence the bone quality and improve the bone breaking strength, the bone-body ratio and the weight of the heat stress broiler chicken. The additive can improve the immune organ index of the broiler chicken and improve the relative weight of spleen, thymus and abdominal fat. The feed additive can improve the oxidation resistance and immune performance of the broiler chickens under high-density stress and heat stress, relieve bone injury, and possibly protect bone health of the broiler chickens by removing free radicals in the body and maintaining calcium and phosphorus metabolic balance in the body.

The invention belongs to the technical field of underwater topographic survey, and particularly relates to an underwater topographic survey device with a diving camera, which comprises a base, a supporting arm is fixedly connected to the upper end surface of the base, a rotating roller is rotatably arranged on the right side of the supporting arm, and a supporting roller is rotatably arranged on the left side of the supporting arm. A rope is wound on the rotating roller, and a surrounding scraping mechanism for preventing aquatic plants from shielding the diving camera main body is also arranged on the shell. The surrounding scraping mechanism is utilized, when a worker finds that a picture shot by the diving camera body is covered by aquatic plants, the two scraping rings can be driven to descend at the same time, the aquatic plants attached to the surface of the diving camera body are scraped off through the scraping rings, and the aquatic plants are made to be away from the diving camera body; therefore, the situation that normal shooting of the diving camera main body is affected due to the fact that aquatic plants are wound or hung on the surface of the diving camera main body is avoided.

The invention discloses a distributed power fixed-point take-off and landing portable solar unmanned aerial vehicle, and belongs to the technical field of overall comprehensive design of unmanned aerial vehicles. Comprising a front wing, a rear wing and a folding assembly, the front wing and the rear wing are arranged in a tandem wing mode, the folding assembly is connected between the front wing and the rear wing, the front edge of the front wing and the front edge of the rear wing are each provided with a plurality of rotors in the spanwise direction, and the four rotors located in the spanwise middle of the front wing and the spanwise middle of the rear wing are located at the four vertexes of a quadrangle respectively to form the four-rotor power system of the unmanned aerial vehicle. The other rotor wings form a fixed wing power system of the unmanned aerial vehicle; the front wing and the rear wing are connected into a tandem wing with a space height difference through the folding assembly, and the front wing and the rear wing can be in a stacked state through deformation. The problems that a single-type propeller of a tailstock type configuration machine consumes much energy, the efficiency of the cruising stage is low, and the endurance is short are solved.

The utility model relates to a putting device for putting liquid substances and cleaning equipment, and relates to the technical field of cleaning equipment, the putting device comprises a putting mechanism, the putting mechanism comprises two putting units, and the putting units are used for putting a cleaning agent; the first linkage gear set and the second linkage gear set are arranged corresponding to the two putting units respectively; the driving motor is connected with the first linkage gear set and the second linkage gear set through a transmission mechanism, when the driving motor rotates forwards, the driving motor drives the first linkage gear set to operate so as to drive one throwing unit corresponding to the driving motor to throw the cleaning agent, and when the driving motor rotates backwards, the driving motor drives the second linkage gear set to operate so as to drive the throwing unit corresponding to the driving motor to throw the cleaning agent. And the other feeding unit corresponding to the feeding unit is driven to feed the cleaning agent. Due to the fact that the cleaning agents in the different throwing units are selected to be thrown through positive and negative rotation of one motor, two motors do not need to be arranged to control the different throwing units respectively, the structure is simple, the occupied space is reduced, and the problem that in the prior art, carrying and installation of a throwing device are affected is solved.

The invention relates to the technical field of mud dice breeding, and particularly discloses a mud dice breeding and breeding method which comprises the following steps: step 1, selecting a site of a mud dice breeding farm; 2, building a culture pond; building a culture pond according to the terrain, including ditching, ridging, soil turning and leveling, and burying a water inlet and drainage pipeline on the mud flat; 3, cleaning the pond and applying a base fertilizer; 4, fry stocking; step 5, breeding management; according to the method, the acre yield of mud dice culture can be increased, the weight of a single mud dice is increased, the death rate and the disease and pest rate are reduced, the income is increased, the reproduction rate of the mud dice can be increased, the method is very simple in the mud dice culture process, and enemies can be prevented from entering the culture pond.

The present invention discloses a filtering device for municipal engineering road drainage, and relates to the field of filtering devices. The filtering device for municipal engineering road drainage comprises a filtering horizontal barrel, which is arranged inside a filtering box, a rotating mesh plate is rotatably arranged inside the filtering horizontal barrel, a supporting block is movably arranged inside the filtering horizontal barrel, the rotating mesh plate is arranged outside the supporting block, a dust collecting box is arranged below the filtering horizontal barrel, a mobile box is movably arranged inside the dust collecting box, gravity springs are arranged on both sides of the mobile box, an opening and closing plate is rotatably arranged inside the mobile box, and the opening and closing plate is used for opening and closing the side position of the dust collecting box. The filtering device for municipal engineering road drainage drives the rotating mesh plate to move by the gravity of impurities, so that the impurities directly fall into the inside of the mobile box, thereby increasing the filtering efficiency of rainwater, and the mobile box will impact the opening and closing plate after moving to a certain position, and automatically complete the discharge of impurities.

The invention discloses cable sheath thermal aging test equipment, and relates to the field of aging test equipment. According to the cable sheath thermal aging test equipment, through the ingenious structural design, the replacement efficiency of the sheath is greatly improved, when the sheath is replaced by traditional thermal aging test equipment, a user needs to manually take down clamps one by one, then the clamps with the clamped sheath are hung again, operation is tedious, and consumed time is long; the power rod is rotatably mounted at the bottom of the storage rack, the positioning rack on the power rod is matched with the sleeve rods to fix cable sheaths in advance, the sheaths do not need to be mounted one by one when replaced, follow-up detection can be carried out only by placing the sleeve rods with the mounted sheaths on the positioning rack, the sheath replacement time is effectively shortened, and meanwhile, the cable sheaths can be conveniently replaced. The multiple sets of power rods rotate synchronously through the second chain wheel and the second chain, it is ensured that the multiple sets of positioning frames act synchronously, the replacement efficiency is further improved, and great convenience is brought to detection work of the cable sheath.

The invention belongs to the technical field of civil construction, and discloses an active vibration reduction mechanism of a heading machine for civil construction. The active vibration reduction mechanism of the tunneling machine for civil construction comprises a shield tunneling machine body and a cutterhead, a driving motor is fixedly connected to the left side of the shield tunneling machine body, a stabilizing mechanism is arranged on the shield tunneling machine body and located on the outer side of the driving motor, the output end of the driving motor is fixedly connected with the cutterhead, and the active vibration reduction mechanism is arranged on the cutterhead. The shield tunneling machine body is further provided with a monitor. According to the active vibration reduction mechanism of the heading machine for civil construction, through the design of the stabilizing mechanism and the cooperation of monitoring of the monitor, vibration generated during operation of the driving motor is restrained, the output end of the driving motor is restrained, and therefore the connecting position of the driving motor and a cutter head is stabilized; therefore, the stability between the driving motor and the cutter head is effectively improved, and noise generated by vibration during equipment operation is reduced.

The utility model relates to the technical field of asphalt road flattening devices, and discloses an asphalt road flattening device which comprises a flattening frame provided with two load-bearing rollers, an adaptive frame is arranged on the side edge of the flattening frame, a sliding bearing seat is arranged in the adaptive frame in a sliding mode, and the load-bearing rollers are arranged on the sliding bearing seat. The two ends of the load bearing roller are rotationally arranged in the sliding bearing seats, springs are arranged at the upper ends and the lower ends of the sliding bearing seats, and handrails used for pushing the flattening frame to move are fixedly arranged on the flattening frame. The asphalt pavement compacting device is simple in structure, has two compacting surfaces acting on an asphalt pavement, can increase the weight of the load-bearing roller by adding water to play a role in rapid compacting during working, and in addition, an additional downward pressure is effectively increased under the action of the linear vibrator, so that the compacting effect is better, and the asphalt pavement compacting device is suitable for popularization and application. Water can be drained after the water filling nozzle cover is taken down, the weight of the load-bearing roller is reduced, and transportation and movement are facilitated.

The invention provides a steel truss hoisting gravity center adjusting device and method. The steel truss hoisting gravity center adjusting device comprises two lifting lugs, a mounting plate, a plurality of positioning frames and a traction assembly. The two lifting lugs are arranged on the steel truss at intervals in the length direction of the steel truss, and the mounting plate is provided with two safety ropes connected with the two lifting lugs respectively. The positioning plates are all arranged on the lower side of the mounting plate, each positioning frame is suitable for being buckled to the upper end face of the steel truss, the two ends of each positioning frame are each connected with a balance weight part, the balance weight parts are detachably connected with the positioning frames, and / or the weight of the balance weight parts is adjustable. And the traction assembly is arranged on the mounting plate and is connected with each positioning frame. In the actual use process, inclination and shaking of the steel truss can be limited in the mode of disassembling the balance weight piece and / or adjusting the weight of the balance weight piece. According to the steel truss hoisting gravity center adjusting device and method, the gravity center of the steel truss can be adjusted, the steel truss is prevented from shaking and inclining in the air, and therefore the safety of a construction site is guaranteed.