48results about How to "Improve ground breaking ability" patented technology

The invention relates to a rotary drilling machine with a vibrator, comprising a rotary drilling device and a lifting device used for lifting the rotary drilling device. The rotary drilling device comprises a drill bit and a drill bit rotation driving mechanism, wherein the drill bit and the drill bit rotation driving mechanism are arranged in order from bottom to top; the vibrator is disposed between the drill bit rotation driving mechanism and the drill bite. According to the scheme, the rotary drilling machine with the vibrator has improved ground-breaking ability of the drill bit.

The invention provides a pipe pile-anchor rod composite foundation capable of bearing pulling and pressing bidirectional loads and a construction technology of the pipe pile-anchor rod composite foundation. The pipe pile-anchor rod composite foundation comprises a pipe pile and an anchor rod. An anchoring hole is reserved in a foundation bottom plate of a building structure, and a stretching end anchorage device is pre-buried in the anchoring hole. The anchor rod is composed of an anchor cable and a prefabricated anchor head, and the prefabricated anchor head is buried in soil below the foundation bottom plate. The upper end of the anchor cable penetrates out of the pipe pile to stretch into the anchoring hole, and is locked by the stretching end anchorage device after being stretched. The pipe pile is supported between the foundation bottom plate and the prefabricated anchor head, and the lower end of the pipe pile is fixedly connected with the upper end of the prefabricated anchor head. In the pipe pile-anchor rod composite foundation, the prefabricated anchor head is additionally arranged at the lower end of the pipe pile so that the pressure resisting bearing capacity of the pipe pile can be improved; a waterproof curtain is formed by the pipe pile with the two closed ends, the erosion effect of underground water and the like on concrete and steel can be resisted, and the impermeability and durability of the anchor rod, the pipe pile and foundation bottom plate joints can be improved; and structural reliability and stress performance are ensured, meanwhile, project quality can be effectively improved, the construction period can be shortened, and the investment can be saved.

The invention discloses a drip irrigation belt shallow-buried device with an automatic locking function. The drip irrigation belt shallow-buried device with the automatic locking function comprises adrip irrigation belt conveying mechanism, and a hydraulic braking mechanism. A drip irrigation belt rolling plate in the drip irrigation belt conveying mechanism is rotatably installed on a support base and winded by a drip irrigation belt. The drip irrigation belt rolling plate is provided with the hydraulic braking mechanism. Along a conveying route of the drip irrigation belt, a wheel frame below the support base is successively provided with a guide sleeve corresponding to the drip irrigation belt rolling plate, a fixed pulley corresponding to the guide sleeve and a moveable pulley which is positioned above the inner side of the fixed pulley and can be upwards and downwards moved, and a drip irrigation belt press wheel which is positioned below the moveable pulley and installed at therear side of a furrow opener. The drip irrigation belt shallow-buried device is capable of stopping the rotated conveying of the drip irrigation belt rolling plate in time in an emergency shutdown process, and effectively preventing the winding and congestion of the drip irrigation belt; realizing single independent profiling depth limit, flexibly adjusting the burying depth and the laying width of the drip irrigation belt, and guaranteeing the consistent laying depth of the drip irrigation belt; and simultaneously laying the multiple drip irrigation belts, high in working efficiency, and goodin laying effect.

The invention discloses an alfalfa planting method. The method comprises the following steps of 1, sowing land treatment, wherein alfalfa sowing land is subjected to weed removing and ploughing treatment; 2, organic fertilizer applying, wherein organic fertilizer or biological compost is applied in the treated sowing land; 3, alfalfa seed treatment, wherein alfalfa seeds are cleaned and subjectedto impurity removing and dormancy breaking; 4, interval sowing, wherein sowing adopts the alfalfa and nurse crop interval sowing mode, and nurse crops are crops with the excellent ground breaking capacity. The organic fertilizer is used for replacing existing nitrogenous fertilizer to perform fertilization, an organic carbon source is supplemented, soil physical properties are improved, and the diversity and activity of alfalfa root system soil normolmicrobiota are maintained conveniently; the nurse crops high in ground breaking capacity are planted at intervals while alfalfa is planted, by means of the excellent ground breaking capacity, when seedlings emerge, the nurse crops can drive alfalfa seedlings to break the ground together, and the survival rate of the alfalfa is further improved.

The invention provides a hob trailing head trailing suction hopper dredger driven by an outer-rotor motor. The trailing suction hopper dredger includes a hob trailing head, the hob trailing head is connected with a ship body through a trailing arm, and the hob trailing head includes a trailing head fixing body, a trailing head moving shield, a cylinder with trailing teeth, an outer-rotor motor, ahydraulic device, and a high-pressure washing bent pipe. The trailing head fixing body is connected with the moving shield in a rotating mode, the high-pressure washing bent pipe is arranged above thetrailing head fixing body, the cylinder with trailing teeth is fabricated below the moving shield, the cylinder with trailing teeth includes a cylinder, a tooth seat, and trailing teeth, and the cylinder is internally provided with the outer-rotor motor in a sealing mode. Stators and rotors drive the cylinder to rotate around a horizontal shaft, and whole cylinder with trailing teeth is connectedwith the trailing head moving shield in a rotating mode, and can follow the moving shield to rotate within a certain angle range relative to the trailing head fixing body. According to the trailing suction hopper dredger, the weight of a trailing head can be effectively controlled, axial constraint accessories can be reduced, and the effective cutting width can be improved so that groundbreakingcapacity of the trailing head of a dredger and the operation efficiency of dredging hard soil can be improved significantly.

The invention discloses a drum-type jacking excavator, which comprises a cylinder body, a cylinder group arranged on the front panel of the cylinder body, and a soil conveyor belt fixed in the cylinder body; The upper roller and the lower roller, the two ends of the rotating shafts of the upper roller and the lower roller are respectively connected to the left and right side walls of the cylinder; the surface of the upper roller is equipped with evenly distributed upper scrapers, and the surface of the lower roller is equipped with evenly distributed lower scrapers and upper scrapers. There is a gap between the scraper and the lower scraper; the soil conveyor belt is set close to the junction of the upper scraper and the lower scraper. The beneficial effects of the invention are: through the cooperation of the drill and the scraper, the soil-breaking ability is greatly strengthened, the excavation speed is fast, the jacking operation efficiency is high, the degree of automation is high, and the amount of manual labor is reduced.

The invention discloses an automatic seedling transplanting machine driving device. The device comprises a motor and a driving component, a disc is installed at the end of an output shaft of the motor, a swing rod is cooperatively connected to the front side of the disc, a sector gear is fixedly to the left end of the swing rod through welding, a locating pin penetrates through the center of a circle of the sector gear and is in clearance fit with an opening formed in the center of the circle of the sector gear, the driving component is arranged on one side of the sector gear, and the drivingcomponent is a rack which is meshed with the sector gear. The invention further discloses a seedling transplanting machine containing the driving device. Accordingly, by means of cooperation of the disc, the swing rod, the sector gear and the rack and the quick-return characteristics, a shovel head moves downwards, the groundbreaking speed is increased, thus the soil is impacted, and the groundbreaking effect is improved; meanwhile, by arranging a chain saw, roots in soil can be cut off rapidly, root damage is avoided, and by cooperating with the shovel head, cutting is conducted more rapidlyand efficiently, and labor is saved.

The invention discloses a soil core sample sampling device for engineering geological investigation, relates to the technical field of soil sampling devices, and solves the problems that an existing direct insertion type sampling device is poor in soil breaking performance and a rotary drilling type sampling device cannot sample a plurality of samples at the same time. The soil core sample sampling device for engineering geological investigation comprises device drilling rods, and the drilling rods are inserted into transmission cylinders. According to the device, the transmission cylinders drive the drilling rods to rotate; the drilling rods can rotationally drill into soil for sampling; the ground breaking performance is high, the problem that a traditional direct insertion type samplingdevice is poor in ground breaking performance is solved; and the device can synchronously drive four transmission cylinders to rotate at the same time through a driving motor, so that the device canobtain four samples at a time, the problems that a traditional rotary drilling-in type sampling device can only obtain one sample at a time, and the workload is large are solved, and the adaptabilityand practicability of the device are improved.

The present invention discloses a miniature portable automatic hoe. The hoe comprises a hoe handle, an overturn blade and a power source, wherein the power source is fixed between the hoe handle and the overturn blade; the overturn blade is connected with an output shaft of the power source to rotate; the overturn blade comprises a main shaft and a plurality of blades; the main shaft of the overturn blade is connected with the power source; the power source is used for driving the overturn blade to rotate; the hoe handle is connected with one end of the overturn blade or the power source; the length of the hoe handle is 50-140 cm; and a control switch is arranged at the tail end of the hoe handle which is away from the power source; and the control switch is connected with the power source and controls an operating state of the power source. According to the miniature portable automatic hoe disclosed by the present invention, automatic soil-loosening or ditch draining and other functions of the hoe are achieved; people only need to assist the hoe and follow a movement of the hoe, so that the labor and the labor intensity of people are saved, and the requirements of farmers planting agricultural crops and forest crops are effectively improved; a connection relationship between the power source and the overturn blade or the hoe handle is rationally arranged; the weight of the hoe is reduced, so that the hoe is easy to carry and transport, and is suitable for use in small-scale cultivation.

The invention discloses a soil breaking device applied to construction project quality. The soil breaking device comprises a movable base, a mounting frame, a fixing bolt, a vertical lifting mechanism, a bearing frame, a longitudinal translation mechanism, a connecting rod, a first hinge frame, a shell, a reciprocating mechanism, an impact drill rod, an electric push rod, a third hinge frame, a second hinge frame, a control cabinet and a battery. The soil breaking device has the beneficial effects that the vertical lifting mechanism and the longitudinal translation mechanism are arranged, the height of the soil breaking position can be adjusted, soil breaking at different height positions can be carried out, the longitudinal position can be adjusted through the longitudinal translation mechanism, and movement in the longitudinal horizontal direction can be carried out; and meanwhile, the electric push rod is arranged, the two ends of the electric push rod are hinged, meanwhile, the soil breaking structure is also installed in a hinged mode, the angle of the soil breaking structure can be adjusted through telescopic adjustment of the electric push rod, and therefore soil breaking at the flat ground and slope positions can be met, and the soil breaking effect is good.

The invention discloses an agricultural traction compacting machine, and relates to the technical field of agricultural machinery. The agricultural traction compacting machine comprises a wheel carrier and a bracket. One surface of the bracket is rotationally connected with the wheel carrier through a hinge support and a bolt, the two sides faces of the bracket are fixedly connected with a telescopic device, a shaft seat is fixed to the bottom end face of the telescopic device, the shaft seat is in threaded connection with a first spindle through a nut, the surface of the first spindle is rotationally matched with a first sleeve shaft, a soil breaking wheel is fixed to the surface of the first sleeve shaft, sawteeth are arranged on one surface of the soil breaking wheel, the sawteeth are middle convex portions of the soil breaking wheel, and the soil breaking wheel is arranged in front of a compacting wheel. The soil breaking wheel in a sawtooth soil breaking mode is arranged in frontof the compacting wheel, broken grooves are provided for the compacting wheel, the soil breaking capacity of the compacting machine is improved, too-high loads are not needed, the working efficiency of the compacting machine is improved, and the burden on a traction machine is relieved.

The invention provides a double-row automatic ditching machine for saline-alkali soil improvement and a construction method thereof. The double-row automatic ditching machine comprises a machine body,wherein the machine body is provided with a ditching device and a control system, the ditching device comprises a fixing frame fixed at the rear end of the machine body, two symmetrically arranged mounting seats are slidably mounted on the fixing frame, sliding mechanisms are jointly arranged between one ends of the two mounting seats and the fixing frame, a ditching mechanism driven by a first driving motor is arranged on each mounting seat, and a drilling mechanism is arranged at the other end of each mounting seat; and the control system comprises a central processing unit which is in communication connection with a signal receiving module and a remote controller, and control rods which are connected with the central processing unit are arranged on the machine body. According to the ditching machine, a double-row automatic ditching structure is adopted, the drilling mechanisms are additionally arranged at the same time, two ditches can be dug at one time, the drilling can be completed, the ditching efficiency is greatly improved, the ditching distance is freely adjusted according to requirements, and the ditching machine has the advantages of short construction time and low labor intensity of workers.

The invention provides a pipe pile-anchor rod composite foundation capable of bearing pulling and pressing bidirectional loads and a construction technology of the pipe pile-anchor rod composite foundation. The pipe pile-anchor rod composite foundation comprises a pipe pile and an anchor rod. An anchoring hole is reserved in a foundation bottom plate of a building structure, and a stretching end anchorage device is pre-buried in the anchoring hole. The anchor rod is composed of an anchor cable and a prefabricated anchor head, and the prefabricated anchor head is buried in soil below the foundation bottom plate. The upper end of the anchor cable penetrates out of the pipe pile to stretch into the anchoring hole, and is locked by the stretching end anchorage device after being stretched. The pipe pile is supported between the foundation bottom plate and the prefabricated anchor head, and the lower end of the pipe pile is fixedly connected with the upper end of the prefabricated anchor head. In the pipe pile-anchor rod composite foundation, the prefabricated anchor head is additionally arranged at the lower end of the pipe pile so that the pressure resisting bearing capacity of the pipe pile can be improved; a waterproof curtain is formed by the pipe pile with the two closed ends, the erosion effect of underground water and the like on concrete and steel can be resisted, and the impermeability and durability of the anchor rod, the pipe pile and foundation bottom plate joints can be improved; and structural reliability and stress performance are ensured, meanwhile, project quality can be effectively improved, the construction period can be shortened, and the investment can be saved.

The invention discloses an efficient soil breaking drill bit. The efficient soil breaking drill bit comprises a spindle, a spiral guide vane connected to the spindle, and a soil breaking end. The soil breaking end comprises two outer side soil breaking end bodies and two central soil breaking end bodies. The outer side soil breaking end bodies are fixed to the symmetrical positions of the spiral guide vane. The central soil breaking end bodies are connected to the tail end of the spindle of the drill bit. The soil breaking drill bit is good in soil breaking effect in a high compacting degree environment, high in broken stone passing ability, low in energy consumption, simple in structure and easy to machine.

The invention discloses a sand shoveling device for building construction. The sand shoveling device comprises a power device, a travelling device, a crank transmission device, an earth cutting device, a cab and a steering device, and is characterized in that one end of the upper part of the travelling device is fixedly connected with the power device; the end, away from the power device, of the upper part of the travelling device is fixedly connected with the cab; the end, away from the cab, of the travelling device is symmetrically and fixedly connected with counterweight blocks; the end, close to the cab, of the travelling device is fixedly connected with the steering device; the upper part of the steering device is fixedly connected with the crank transmission device, and the crank transmission device is located at the end close to the cab; and the side, away from the cab, of the crank transmission device is movably connected with the earth cutting device, the crank transmission device comprises a first hydraulic cylinder, a supporting frame and a fixed seat, and the upper surface of the steering device is fixedly connected with the fixed seat. The sand shoveling device is simple in structure, high in safety, low in construction cost and high in practicality.

The invention belongs to the technical field of soil loosening devices, and particularly relates to an agricultural production sweet potato planting soil loosening device to solve the problems of inconvenience in soil turning angle adjustment and poor self-locking effects of an existing soil turning plate. The device comprises a mounting plate with a flat square tube structure, a cavity is formedin the mounting plate, screw holes are formed in the middles of the upper surface and the lower surface of the mounting plate, the same external thread tube is connected between the two screw holes ina threaded manner, four sliding grooves are formed in the inner wall of the circumference of the external thread tube and close to the bottom end of the external thread tube, fixing strips are clamped into the four sliding grooves, the same internal thread tube is fixed among the four fixing strips, studs are connected onto the inner wall of the circumference of the internal thread tube in a threaded manner and close to the bottom end of the internal thread tube, a soil turning plate is welded at the bottom ends of the studs, and limit holes are formed in the top ends of the studs and close to the middles of the studs. The soil turning angle of the soil turning plate can be finely adjusted and can also be greatly adjusted conveniently, and self-locking effects are good.

Fluidized soil backfilling equipment with a screening function comprises a shell, a crushing mechanism, a screening mechanism, a chain harrow conveying mechanism and a mixing and stirring mechanism, the crushing mechanism, the screening mechanism, the chain harrow conveying mechanism and the mixing and stirring mechanism are arranged in the shell, and the chain harrow conveying mechanism and the mixing and stirring mechanism are fixed to a floor in the shell. The discharging end of the chain harrow conveying mechanism is arranged above a feeding port of the mixing and stirring mechanism, the screening mechanism is arranged above the feeding end of the chain harrow conveying mechanism, a cement feeding port is formed in the position, at the side portion of the chain harrow conveying mechanism, of the shell, and the crushing mechanism is arranged between the screening mechanism and the mixing and stirring mechanism. A discharging port of the crushing mechanism is arranged right opposite to the interior of the screening mechanism, and a feeding port of the crushing mechanism is formed in an opening in the top of the shell. According to the design, multiple functions are integrated, and the integration degree and the automation level of the equipment are high.

The invention relates to a flushing double-sided plough tooth for a dredging rake head and belongs to the technical field of dredging engineering. The flushing double-sided plough tooth for the dredging rake head is characterized by being composed of a toothholder and a tooth body; the toothholder is mounted in a position of a wear-resistant block of the rake head and the tooth body is mounted onthe toothholder; tooth wings are arranged on two sides of the lower end of the tooth body, and the tooth wings are of backwards extended structures; and a flushing channel is formed in the middle of atooth trunk. The flushing double-sided plough tooth for the dredging rake head has the advantages of being simple in structure and convenient to assemble, increasing the disturbing force of compact soil, finishing penetrating into, loosening, breaking and turning soil continuously and effectively, improving the efficiency of excavating the compact soil, reducing the labor intensity of seamen, shortening the construction period, being suitable for excavating the compact soil and the like.

The invention discloses an efficient astragalus membranaceus unearthing and harvesting device. The efficient astragalus membranaceus unearthing and harvesting device comprises two side plates which are symmetrically arranged in a front-back manner and incline rightwards downwards; a flat box body with an opening in the lower end is fixedly installed between the inner side walls of the right ends of the two side plates; the right ends of the tops of the two side plates are fixedly connected with a same cross beam; the cross beam is connected with a traction device through a connecting device; aplurality of steel shovels are evenly and fixedly installed on the right side wall of a box body; a containing groove is formed in the front side wall of the box body between every two steel shovels;and a movable rod is arranged in each containing groove. First sliding blocks drive the movable rods and the corresponding steel shovels to rapidly move in a left-right reciprocating manner, and themovable rods are matched with the fixed steel shovels, so that soil and astragalus membranaceus are excavated more easily; the first sliding blocks drive push plates to rapidly move in a left-right reciprocating manner, so that the push plates can scatter the soil attached to the astragalus membranaceus; and a first rotating shaft is driven by a motor to rotate so as to drive a roller to drive a transmission and soil screening device to perform leftward transmission as well as to screen the scattered soil from the astragalus membranaceus.

The invention relates to the technical field of digging equipment, in particular to a spreading and cutting type digging bucket. The spreading and cutting type digging bucket comprises a bucket body, a shovel tooth and a lifting lug, wherein the shovel tooth and the lifting lug are respectively connected to the bottom and top of the bucket body; a spring plate is arranged at the bottom of the shovel tooth. The spring plate is arranged at the bottom of the shovel tooth, when the digging bucket is inserted in soil, the spring plate is extruded to be flatly adhered to the shovel tooth, after the insertion is in place and stops, the spring plate is elastically expanded, the soil is spread downwards, and meanwhile the shovel tooth is jacked upwards, so that a gap is enlarged, the shovel tooth is prevented from being sucked, the soil breaking capacity is strengthened, and the digging efficiency is greatly improved.

The invention provides a vibrating bionic shovel for garlic harvesting, which is used for solving the problems that an existing garlic harvesting machine is too high in power consumption, a soil breaking device is poor in soil breaking performance, soil breaking is not thorough especially for clayed soil, and soil blocking of a machine tool is caused. Power is input from a driven belt pulley to drive a crank shaft to rotate; the crank shaft enables the power to drive a vibration rod to vibrate through a connecting rod; and the vibration rod drives an arrow shovel handle and a bionic shovel piece mounted at the front end of the arrow shovel handle to carry out reciprocating motion. When the bionic shovel moves backwards, an elastic element mounted on the vibration rod is compressed, and when the bionic shovel moves forwards, the elastic force is released, the ground breaking force is increased, and the power consumption of the whole machine is reduced. According to the designed bionic shovel piece, the shovel surface is a curved surface, can arch the soil and has a better soil breaking effect than a plane; soil breaking is better facilitated through the reciprocating motion of the bionic shovel piece; and the bionic shovel piece is suitable for garlic harvesting of various types of soil.

The invention provides diameter expanding equipment for a cast-in-place concrete pile. The diameter expanding equipment comprises an outer sleeve component, an inner sleeve component adapted to be mutually nested with outer sleeve component, and a soil breaking structure, the soil breaking structure is arranged on the lower end face of the outer sleeve component, a gap allowing concrete to pass through in the axial direction of the outer sleeve component is formed between the soil breaking structure and the outer sleeve component, and the soil breaking structure is of a structure with the wide upper portion and the narrow lower portion. The invention further provides a construction method of the cast-in-place concrete pile adopting the expanding equipment.

The invention discloses a mini-type hand-held automatic hoe. The mini-type hand-held automatic hoe includes a hole handle, a turning blade and a power source; the turning blade of the mini-type hand-held automatic hoe includes a main shaft and a plurality of blades; the main shaft of the turning blade of the mini-type hand-held automatic hoe is connected to the power source; the power source of the mini-type hand-held automatic hoe drives the turning blade to rotate; and the hoe handle of the mini-type hand-held automatic hoe is connected to one end of the turning blade or the power source. According to the mini-type hand-held automatic hoe, the turning blade is connected to the power source or the hoe handle, and the turning blade includes the main shaft connected to the power source and the plurality of blades fixed around the main shaft, in this way, when the power source drives the main shaft to rotate, the plurality of blades connected to the main shaft are driven to rotate, and then automatic soil loosening and trenching can be achieved; a man only needs to hold the hoe handle and moves with the mini-type hand-held automatic hole; and labor force and labor intensity of the man can be saved, and the demands that a farmer plants crops or forest-crops can be effectively met.

The invention relates to a wharf lower portion dredging device. The wharf lower portion dredging device comprises diesel oil driven equipment, two slurry pumps, a high-pressure water pump, a hydraulic pump, a conveying mechanism, a hoisting mechanism and a drag head assembly. The diesel oil driven equipment, the slurry pumps, the high-pressure water pump and the hydraulic pump are arranged on a working platform. The two slurry pumps are mounted on the rear side of the conveying mechanism. The front end of the working platform is connected with the conveying mechanism through a movable shaft. The working platform is provided with a front anchor gear, a rear anchor gear, a left anchor gear and a right anchor gear for fastening and fixing. A dredging construction method comprises the steps that firstly, equipment is mounted and debugged; secondly, the dredging device enters the construction area, and front splay anchors / cables and rear splay anchors / cables are fastened; thirdly, the dredging drag head assembly is extended into a preset coordinate point according to the tide level; fourthly, construction is conducted in a segmented and layered mode; and fifthly, after the drag head assembly is fallen, the drag head assembly is translated left and right by fastening or loosening the anchor cables, and the step is repeated to complete operation. According to the scheme, during operation, operators do not participate in operation on the wharf lower portion, and the whole implementation process is easy to operate, safe and reliable.

The invention relates to a garden machinery device, and particularly relates to a mini-sized automatic rooter. Both sides of a soil ploughing wheel are equipped with two rolling wheels, and height of the soil ploughing wheel or the rolling wheel is adjustable; when soil is turned over, the soil ploughing wheel is downwards raised and contacted with ground, and the rolling wheel can play the assistant supporting function; when the soil ploughing machine is carried out, the soil turning wheel is retreated to insides of two rolling wheels, so that the rolling wheels are grounded; besides, a soil ploughing blade on the soil ploughing wheel is inclined to the axial line of the soil ploughing wheel, and the inclination direction of every soil ploughing blade on the same one soil ploughing wheel is consistent; when soil is ploughed, one end of the soil ploughing blade is inserted to the ground firstly, and the subsequent part is gradually extended to the ground along with the rolling of the soil ploughing wheel, and forms a diagonal cutting opening on the ground. Compared with the prior art, the soil ploughing machine is convenient to carry out and good in stability in soil turning, and can be applied to the cohesive soil with compact ploughing.

The invention belongs to the technical field of planting of Chinese medicinal materials, in particular to a sowing and planting method for improving the medicinal value of Gentiana scabra. The specific method is as follows: (1) in mid-March, immersing seeds of Gentiana scabra a nutrient solution of magnesium chloride, taking out the seeds from a filtrate, conducting electric field treatment, drying the seeds to have a moisture content of 24% to 26% for sowing; (2) treating planting land before sowing, applying decomposed folium-mori cattle manure, conducting shallow ploughing to have a depth of 18-20 cm, conducting bedding and building a shed; and (3) starting to spray a nutrient solution to leaf surfaces 24 to 28 days after seedling emergence, then spraying a nutrient solution to leaf surfaces once every 85 to 90 days until harvest is started; and from mid-May to mid-September every year, conducting 80% shading treatment from 8:00 to 17:00 every day, and conducting harvesting at the end of October of a second year. Therefore, the emergence rate reaches 98% or more, breeding of harmful bacteria is effectively inhibited, and harvest can be carried out in the second year, and the gentiana scabra gentiin content, erythricine content and gentiobiose / gentianose content are remarkably improved.

The invention relates to a hinge type tool bit suitable for a push type pipe jacking machine and the push type pipe jacking machine. The hinge type tool bit comprises an outer side steel protection cylinder, a ground breaking device, blades, a connecting rod and a driving system. The ground breaking device is in a regular pyramid shape. Each edge of the regular pyramid at the bottom end of the ground breaking device is provided with a hinge device. One end of each hinge device is connected with the bottom end of the ground breaking device through a connecting piece, and the other end of each hinge device is connected with the corresponding blade through a connecting piece. Compared with the prior art, the regular pyramid-shaped ground breaking device is made of solid steel and provided with protruding thorns in the pushing direction, and the ground breaking function can be achieved in the pipe jacking process. At the bottom end of the ground breaking device, each edge of the regular pyramid is provided with the corresponding hinge device, and the hinge devices are fixedly connected with the bottom end of the ground breaking device through screws and can be detached and replaced. The other ends of the hinge devices are connected with the blade type blades with the protruding thorns, in other words, the blades are connected with the ground breaking device through hinges, the blades can be replaced at any time, the broken blade can be detached, and use is convenient.

The invention relates to a powerful ground-breaking reamer for a dredger. The powerful ground-breaking reamer comprises a sealing plate, cutter arms, a reamer hub, a cutter ring, cutter teeth and a tooth holder, and is characterized in that a vertical distance between a lower edge of the cutter ring and the upper edge of the reamer hub is 1051 mm; the linear shape of the cutter arms is tapered, and the taper of the cutter arms is 4:5; the lower ends of the cutter arms extend to the inner side of the cutter ring, and the lower ends of the cutter arms and the inner side of the cutter ring are welded together; the diameter of the cutter ring is 1,860 mm; a ring-protecting and wear-resisting plate is welded on the outer edge of the cutter ring; the inner side structure of the cutter ring is that the upper part is narrower than the lower part; the envelope surface of the outer contour of the tooth top of each cutter tooth is close to the taper; and the powerful ground-breaking reamer comprises seven cutter teeth. Under the conditions that the total torque is not changed and a front end structure of a cutter suction dredger bridge is not changed, the acting force of the cutter teeth to soil mass is improved by means of reduction of reamer height, reduction of cutter ring diameter and change of the linear shape of the cutter arms and the like, so that the ground-breaking capacity of the reamer is improved. The powerful ground-breaking reamer for the dredger has the advantages that the structure is simple, the implementation is convenient, the digging force is improved remarkably, the construction efficiency is high and the like.

The invention provides a trailing suction dredger with a hob head driven by an external rotor motor. It includes: the hob harrow head, which is connected to the hull through the harrow arm, and the hob harrow head includes a harrow head fixed body, a harrow head movable cover, a drum equipped with harrow teeth, an external rotor motor, and a hydraulic device and high-pressure flushing elbow; the rake head fixed body is rotatably connected with the movable cover, and a high-pressure flushing elbow is installed above; the roller with rake teeth is installed under the movable cover, including the roller, tooth seat and rake teeth, and the roller is sealed There is an external rotor motor built into the ground, which drives the drum to rotate around the horizontal axis through the stator and rotor; the entire drum with rake teeth is rotatably connected to the movable cover of the rake head, and can rotate within a certain angle range with the movable cover relative to the fixed body of the rake head. The trailing suction dredger provided by the present invention can effectively control the weight of the rake head, reduce the axial restraint attachment, and increase the effective cutting width, thereby greatly improving the soil-breaking ability of the rake head of the dredger and the operation efficiency of dredging hard soil .