882 results about "Soil cover" patented technology

The invention relates to the technical field of agricultural machinery, and discloses an adjustable soil covering device for ginger planting, comprising: a mobile vehicle, the front side of the bottom of which is provided with a front wheel matched with the curved surface of a ridge, and the rear side of which is provided with a rear wheel with a ditch edge profiling structure; the central mixing bin is integrally formed in the middle of the mobile vehicle chassis, and a rotatable scattering disc is coaxially arranged in the central mixing bin. The mixing process of soil and fertilizer is innovatively integrated in the central mixing bin, and the fertilizer is sucked from a storage box through a Venturi negative pressure generator in a pneumatic conveying mode; the high-pressure fan provides airflow power to feed the materials into the mixing bin, non-blocking automatic fertilizer supply is achieved, the fertilizer and soil intersect in the bin, the materials are guided to spirally fall down by means of the tapered spiral flow guide column, the mixing path is prolonged, meanwhile, the ultrasonic vibration plate continuously vibrates to form lumps, it is guaranteed that the two materials are highly and evenly mixed, and the mixing efficiency is improved. And a mixed substrate with stable quality is provided for subsequent precise soil covering.

An automatic pepper seedling transplanter comprises a frame body, a pepper seedling clamping system, a pepper seedling tray distributing system, a pepper seedling feeding system, a walking system, a soil covering mechanism, a seedling raising tray and a main control board, and the pepper seedling clamping system, the pepper seedling tray distributing system, the pepper seedling feeding system and the walking system are all connected with the main control board. The frame body comprises an upper frame, a lower frame, an upper layer plate, a middle layer plate, a left side plate and a right side plate, the pepper seedling clamping system is installed on the upper layer plate, and the pepper seedling tray dividing system is installed on the middle layer plate and located in the upper frame; the pepper seedling feeding system is mounted on the inner sides of the left side plate and the right side plate and located in the lower frame; the soil covering mechanism is mounted on the rear side of the lower frame; the seedling raising plate is placed in the center of the upper-layer plate; the walking system is installed at the bottom of the frame body. The automatic pepper seedling transplanter is simple in structure, convenient to operate, high in adaptability and reasonable in cost.

A vegetable plug seedling precision planting and sowing production line system comprises a conveying module used for production line transmission and plug conveying; the soil paving module is used for paving nutrient soil in the hole tray; the hole pressing module is used for pressing and forming holes in the surface soil of the soil-containing hole tray; the dibble seeding module is used for dibble seeding vegetable seeds to holes one by one according to the specifications of the hole trays; the soil covering module is used for filling and flattening holes in the hole / seed containing hole tray; the spraying module is used for spraying a water-soluble nutrient solution to the soil on the surface layer of the hole tray after soil covering; by combining the planting environment characteristics and seedling raising process requirements of modern agricultural greenhouses, core links such as soil paving, hole pressing, dibble seeding, soil covering, fertilization and watering are integrated into the same production line system, efficient cultivation and automatic production of vegetable hole trays are achieved, and then precision planting and seeding and assembly line work of vegetable hole tray seedlings are achieved.

The utility model discloses a film covering, fixed-point film breaking and soil covering all-in-one machine, which comprises a moving unit, a film covering unit and a soil covering unit, and is characterized in that the moving unit comprises a frame, a first gasoline engine arranged on the frame, walking wheels arranged on the frame, and a transmission part provided with a first transmission wheel; the film breaking unit comprises a second transmission wheel rotatably mounted on the frame, a crank rocker arm mechanism connected with the second transmission wheel, a film breaking rod mounted on the crank rocker arm mechanism and a drill bit mechanism mounted on the film breaking rod, and a transmission chain is mounted between the second transmission wheel and the first transmission wheel; the film mulching unit comprises a film cylinder frame, a film pressing wheel and a soil guiding wheel which are sequentially installed below the frame and in front of the drill bit mechanism from front to back, and the film pressing wheel and the soil guiding wheel are located on the two sides of the frame respectively; according to the equipment, two links of film mulching and fixed-point soil covering are seamlessly integrated, the soil filling and hole sealing operation procedure is moved forwards, the problem that labor is difficult to use in the links is effectively solved, and meanwhile convenience is provided for subsequent transplanting operation.

The invention relates to the technical field of agricultural cultivation, in particular to a farmland soil ecological structure restoration and soil fertility improvement cultivation method which comprises the steps that 1, the soil state is evaluated; 2, tillage depth is determined; step 3, adding organic materials; 4, tillage operation is carried out, a tillage machine is used for carrying out soil tillage, the tillage depth is the tillage depth determined in the step 2, and the tillage operation adopts a layered tillage mode including shallow tillage and deep tillage; step 5, inoculating a microbial agent, namely inoculating the soil microbial agent based on the soil microbial diversity and the soil enzyme activity in the step 1 after the cultivation operation; 6, covering and maintaining are conducted, after cultivation and inoculation, soil covering and maintaining are conducted, and using of covering materials and precise water and fertilizer management are included. Accurate soil evaluation and personalized tillage depth determination enable soil remediation to be more targeted and effective; organic materials and microorganisms are reasonably matched and used, so that the soil fertility and the biological activity are improved.

The utility model discloses a fertilization device for selenium-enriched agricultural product cultivation, which relates to the technical field of fertilization and comprises a cart and a fertilizer storage box arranged on the cart, a feeding port is arranged on the fertilizer storage box, two grinding rollers rotating relatively are arranged on the upper portion inside the fertilizer storage box, and the two grinding rollers are located below the feeding port. A connecting cavity is formed in the fertilizer storage box in the width direction, and a discharging pipe is vertically arranged at the bottom of the connecting cavity in the width direction; a sealing strip matched with the discharging pipe is arranged on the upper portion in the discharging pipe, and a plurality of inserting rods which are arranged at equal intervals front and back are vertically arranged at the bottom of the sealing strip; a first auger is horizontally arranged at the lower part in the fertilizer storage box along the width direction; the fertilizer spreading frame rotates, so that the fertilizer is easily spread to the periphery to be dispersed, large-area covering fertilization is easily realized, the effect of uniform fertilization is realized, the soil rotating shaft cutter rotates, the fertilizer is easily covered below the soil, and the soil covering plate moves to flatten the turned soil.

The utility model discloses a ditching and fertilizing device for planting, which comprises a mounting plate, a fertilizing mechanism is arranged at the bottom of the mounting plate, supporting legs are arranged at the bottom of the mounting plate, a soil covering mechanism is arranged on the inner side of the supporting leg on one side, and a crushing mechanism is arranged at the bottom end of the supporting leg on the other side. And the crushing mechanism and the fertilizing mechanism are provided with a transmission mechanism. According to the utility model, the crushing mechanism is arranged and can be linked through the fertilization mechanism and the transmission mechanism, and the crushing wheel is driven to perform pre-crushing treatment on the ground, so that the adjustable ditching structure performs ditching operation on the land, and the pre-crushing treatment is adopted, so that the soil is looser; furthermore, the adjustable ditching structure can move more quickly for ditching, the ditching efficiency is greatly improved, meanwhile, through belt transmission linkage, only one group of driving mechanism is needed, the equipment cost is saved, the electric energy is saved, and the use efficiency of the adjustable ditching structure is higher.

The utility model discloses an intercropping and seeding all-in-one machine, which relates to the technical field of agricultural machinery and comprises a rack, and a soil leveling mechanism, a fertilizing mechanism, a drip irrigation tape laying mechanism, a mulching film laying mechanism, a first soil covering mechanism, a seeding mechanism, a second soil covering mechanism and a pressing mechanism which are sequentially arranged from front to back along a first direction. Through the soil leveling mechanism, the fertilization mechanism, the drip irrigation tape laying mechanism, the mulching film laying mechanism, the first soil covering mechanism, the sowing mechanism, the second soil covering mechanism and the pressing mechanism, the sowing operation of land preparation before sowing, fertilization, drip irrigation tape laying, film laying, sowing, soil covering on a film and complete pressing can be completed at a time. Compared with the traditional sowing operation that multiple machines and tools enter the land repeatedly, the soil can be protected, the operation efficiency is improved, and the operation cost is reduced.

The utility model belongs to the technical field of transplanting equipment, and discloses a paper bowl type transplanter. The utility model relates to a chained paper bowl transplanting machine, which comprises a seedling storage mechanism, a seedling supporting mechanism, a soil breaking mechanism, a seedling emergence mechanism, a soil covering mechanism and a compaction mechanism, the seedling storage mechanism can be used for placing chained paper bowls, and the soil breaking mechanism can form transplanting ditches suitable for planting of single seedlings. Single seedlings planted in the chain type paper bowls are rapidly placed in the transplanting ditches in a vertical posture through the seedling supporting mechanism and the seedling emergence mechanism, and finally a compact covering soil layer is formed through the soil covering mechanism and the compacting mechanism, so that the steps of ditching, transplanting, soil covering and compacting are continuously completed, the speed limitation of manual seedling taking and feeding is eliminated, and the transplanting efficiency is improved. The transplanting efficiency of the tobacco seedlings is greatly improved.

The utility model discloses a seeding and fertilizing integrated single body with accurate seeding depth. The seeding and fertilizing integrated single body comprises a front cross beam, a longitudinal mounting beam, a fertilizing disc assembly, a seed metering disc assembly, a seed pressing wheel assembly and a soil covering chain, the upper end of the longitudinal mounting beam is mounted on the front cross beam, the longitudinal mounting beam is sequentially provided with a supporting wheel assembly, a fertilizing disc assembly, a seed metering disc assembly and a seed pressing wheel assembly from front to back, an earthing chain is arranged on the rear side of the seed pressing wheel assembly, and the fertilizing disc assembly and the seed metering disc assembly are obliquely arranged and are opposite in inclination direction.

The invention discloses a vibration seeding monomer test bed and a test method. Wherein a rack mounting frame of the seeding single body is fixed with a vibration cross beam, and two ends of a vertical sliding beam are respectively connected with two upright posts of a base frame through a cross beam sliding device; one end of the cross beam electric push rod is connected with the vertical sliding beam, and the other end is fixed with the base frame; one end of the buried electric push rod is fixed with the buried connecting piece of the seeding single body, and the other end of the buried electric push rod is fixed with the base frame; one end of the hanging type electric push rod is fixed with an upper beam of the base frame, and the other end of the hanging type electric push rod is fixedly connected with a soil covering wheel, a limiting wheel and other devices of the seeding single bodies through hanging type steel wires; the soil covering wheels and the limiting wheels of the seeding single bodies are in contact with the conveying belt; the conveying belt is installed on the rack through a belt wheel set and a driving wheel, and the driving wheel is connected with a conveying belt motor. And a vibration sensor is mounted on the seeding single body. The device is used for simulating the field operation environment of the seeding monomer, and further simulating the vibration influence of the field environment and machine motion on the seeding device.

The utility model discloses an atractylodes macrocephala planting soil preparation and covering device which comprises a machine frame, a plurality of buffer boxes installed below the machine frame and buffer mechanisms arranged in the buffer boxes and further comprises an earth cutting plate, a rake head and a grinding roller which are installed below the buffer mechanisms. The buffering mechanism comprises an adjusting block, a transverse strip, a lateral moving hydraulic rod, a rubber table, an extension spring A, a push plate, a sliding rod and a side plate, a sliding seat is arranged on one side of the side plate, and the sliding rod is slidably connected to the middle position of the sliding seat; the adjusting block is pushed by the sliding rod to be separated from the transverse strip, under the elastic effect of the extrusion spring, the adjusting block drives the sliding rod to ascend and avoid, and therefore the earth cutting plate, the rake head and the grinding roller are buffered, the earth cutting plate, the rake head and the grinding roller are prevented from colliding with stones and hard soil blocks, and the soil preparation and covering device for atractylodes macrocephala planting is prevented from being damaged; and unnecessary economic loss is avoided.

The invention discloses a forage grass seeding device suitable for furrow ridge culture in severe saline-alkali soil, and relates to the field of agricultural mechanical equipment. A forage grass seeding device suitable for furrow ridge culture of severe saline-alkali soil comprises a rack, the rack is connected with traction equipment through a connecting piece, and the forage grass seeding device further comprises a ditching mechanism, a pipe laying mechanism, a fertilizing mechanism, a seeding mechanism, a soil covering mechanism and a pressing mechanism; the ditching mechanism is mounted at one end, close to the traction equipment, of the rack; the pipe laying mechanism is mounted at the rear position, close to the ditching mechanism, of the rack; the combined operation device integrates the functions of ditching and salt elimination, layered fertilization, precision seeding and soil covering and pressing, solves the problems that the survival rate of seeds is low, soil salt return inhibits seedling emergence and the like when traditional equipment is used for seeding in saline-alkali soil, and can synchronously complete salt elimination ditch excavation, pasture precision seeding, isolated fertilization, soil covering and soil moisture conservation. The emergence rate of the forage grass in the severe saline-alkali soil can be increased to 65% or above.

The application discloses a seeding device for planting atractylodes lancea and a seeding method thereof, and relates to the technical field of seeding devices. The seeding device for planting atractylodes lancea comprises symmetrically arranged mounting plates, further comprises: rotary drums symmetrically and rotatably connected between the two mounting plates, and a conveying belt connected between the two rotary drums; a shovel plate arranged at one end of the conveying belt and used for shoveling soil at a depth of 3-5 cm below the surface of the soil; and a storage hopper located above the conveying belt and used for arranging rice husks in the storage hopper on the conveying belt and mixing the soil and the rice husks through a mixing assembly and then arranging the mixed soil and rice husks on the land. In the application, a part of the soil on the surface of the soil is shovelled and mixed with the rice husks during the seeding process, and then the mixed soil and rice husks are covered on the seeds of atractylodes lancea, so that the soil covered on the seeds of atractylodes lancea is loose, thereby effectively improving the air permeability, and the seeds of atractylodes lancea are seeded through the anti-blocking seeding mechanism, so that the problem of seed blockage is avoided.

The utility model relates to a corn field operation seeder capable of adjusting plant spacing. The device comprises a rack, a ditching mechanism, a sowing mechanism, a soil covering disc and a pressing mechanism, the ditching mechanism is installed at the front end of the rack, and seed ditches can be formed through the ditching mechanism; the seeding mechanisms are mounted on the rear sides of the ditching mechanisms and are in one-to-one correspondence with the ditching mechanisms; the soil covering disc is mounted on the rear side of the seeding mechanism, and soil covering can be performed on the seed furrows through the soil covering disc; the pressing mechanism is installed on the rear side of the soil covering disc, and covering soil can be pressed through the pressing mechanism. The scheme provided by the utility model is simple in structure, low in manufacturing cost and suitable for small-scale corn seeding, and manual seeding is replaced, so that the labor intensity of workers is reduced, and the seeding plant spacing can be adjusted.

The invention discloses a forward and reverse rotation rotary tillage and sowing all-in-one machine which comprises a rotary tillage mechanism, a seed furrow opening mechanism, a sowing mechanism and a pressing mechanism which are sequentially arranged in a rack from front to back. Seed discharging openings of the sowing mechanism are located between the seed furrow opening mechanism and the pressing mechanism and correspond to seed furrows pressed by the seed furrow opening mechanism one by one downwards, a soil taking mechanism is arranged between the rotary tillage mechanism and the seed furrow opening mechanism, and a soil bearing baffle is arranged above the seed furrow opening mechanism. The soil taking mechanism can backwards throw soil which is in front of the seed furrow opening mechanism and is subjected to rotary tillage by the rotary tillage mechanism to the top of the soil bearing baffle, a soil scraping mechanism is arranged above the soil bearing baffle, and the soil scraping mechanism can backwards scrape the soil falling on the top of the soil bearing baffle into a seed furrow pressed by the seed furrow opening mechanism. The soil covers the seeds which are sown into the seed furrows through the sowing mechanism, so that the soil covering of the seeds in the seed furrows is completed. The seeder has the advantage of good seeding quality.

The utility model discloses a rotary tillage, land leveling, seed rope laying and soil covering all-in-one machine for vegetable planting, which comprises a rack, a rotary tillage, a land leveling, seed rope laying and soil covering all-in-one machine, a seed rope laying and soil covering all-in-one machine and a rotary tillage, the rotary tillage mechanism is arranged at the front end of the rack, and the power input end of the rotary tillage mechanism is connected with a power source of the traction equipment through a gearbox arranged on the rack; the trowelling mechanism is arranged on the rack and located on the rear side of the rotary tillage mechanism; the soil block crushing mechanism is arranged on the rack, located on the rear side of the trowelling mechanism and used for crushing the large soil blocks after the large soil blocks are intercepted; the seed rope laying mechanism is arranged on the rack, and the wire outlet end of the seed rope laying mechanism is arranged on the rear side of the soil block crushing mechanism; and the soil covering and flattening mechanism is arranged at the tail part of the rack and is used for covering soil on the seed rope and flattening the soil surface.

The invention discloses a shield tunnel shallow soil covering section ground surface settlement real-time monitoring device, and relates to the technical field of ground surface settlement monitoring, the shield tunnel shallow soil covering section ground surface settlement real-time monitoring device comprises a measuring assembly used for monitoring shield tunnel shallow soil covering section ground surface settlement in real time and an infrared receiver, and the outer surface of one side of the measuring assembly is provided with a contraction assembly used for storage; the outer surface of the contraction assembly is provided with a supporting assembly used for keeping the measuring assembly stable. According to the shield tunnel shallow soil covering section ground surface settlement real-time monitoring device, adjustment in two directions is achieved through transmission of a turbine and a worm and meshing of a first tooth embedded tooth and a second tooth embedded tooth with a tooth embedded tooth ring, a motor drives the worm to rotate, a fixing shaft is driven by the turbine to rotate, the vertical monitoring angle of an infrared measuring instrument body is adjusted, and the measurement accuracy is improved. The second hydraulic rod pushes the moving frame, so that the jaw tooth ring is meshed with the first jaw tooth to drive the second supporting frame to rotate, and angle adjustment of the infrared measuring instrument body in the horizontal direction is achieved.

The invention relates to the field of agricultural planting, in particular to a seeding depth self-adaptive seeding machine, and provides the following scheme aiming at the problem that a seeding machine in the prior art cannot be automatically adjusted according to surface topography change: the seeding depth self-adaptive seeding machine comprises a mounting assembly which comprises a mounting plate and an auxiliary wheel detachably mounted at the tail part of the mounting plate; the ditching mechanism comprises a plurality of ditching plates rotationally connected to the mounting plate, a terrain detection sensor mounted on the bottom surface of the head of the mounting plate, and a control host mounted on the fixing frame and connected with the terrain detection sensor; an adjusting piece which is connected with the control host and is used for adjusting the depth of the ditching plate according to the topographic change is also mounted on the mounting plate. The device not only can follow the change of the surface microtopography in real time and maintain a constant seeding depth, but also can automatically finish the operation of quantitatively putting seeds into the groove, and can automatically finish the working procedure of soil covering after the seed putting is finished, so that the operation difficulty is greatly reduced, and the seeding efficiency is improved.

The utility model discloses an on-film soil covering machine which comprises a rack, a middle soil feeding roller device is arranged on the inner side of the rack, and side edge soil covering devices are symmetrically arranged on the rack on the two sides of the middle soil feeding roller device. The film soil covering machine has the advantages that when the film soil covering machine is used, loose soil between ridges is lifted through rotation of the film edge soil covering disc, one part of the soil falls to the upper portions of the two sides of a mulching film under the action of gravity after being turned up, and the other part of the soil is pushed to the spiral blades of the taper disc and then is lifted to the high point through rotation of the taper disc. Soil falls into the inner end of the transverse soil feeding roller, then the soil is conveyed to the soil outlet hole in the middle through spiral pushing of the spiral blade of the transverse soil feeding roller, and the soil leaks out of the soil outlet hole and falls to the position above the mulching film, so that soil covering on the film is achieved, and trouble and labor are saved; uninterrupted soil covering operation on the two sides of a laid mulching film and spaced soil covering operation on the upper portion of the mulching film can be conducted, and the labor intensity of planters is greatly reduced.

The application discloses a fertilizing device with soil turning structure for agricultural planting, which comprises a frame, a load bearing wheel group is arranged in the middle of the frame, two bracket wheel groups are arranged on the front side of the frame, and 10-15 soil turning mechanism groups are equidistantly arranged on the bottom surface of the frame. In the technical solution, 10-15 ploughs controlled by the hydraulic system and arranged equidistantly in the frame are arranged, the ploughing of soil and the control of ploughing depth are realized, the soil covering mechanism arranged at the rear side of the plough controls the pitch angle of the fence claw by the hydraulic system, thereby controlling the thickness of the soil covering and the covering of the fertilizer, the organic fertilizer releasing mechanism arranged above the soil covering mechanism crushes the organic fertilizer by the crushing structure in the fertilizer box, the granulated organic fertilizer is mixed into the soil while covering the soil, thereby realizing the function of fertilizing while turning the soil and improving the fertility of the soil.

The invention relates to the technical field of seeding machines, in particular to a film mulching device and a film mulching hole seeding planter, the film mulching device comprises a traction rack, a mulching film roller is arranged on the traction rack, the mulching film roller is used for mounting a mulching film, the traction rack is used for driving the mulching film roller to advance, and the film mulching device further comprises two groups of soil covering assemblies which are respectively arranged on two sides of the advancing direction of the traction rack; the soil covering assembly comprises a ditching structure and a conveying structure, and the ditching structure is arranged on the traction rack and located in front of the mulching film roller. The conveying structure is arranged on the traction machine frame, the ditching mechanism is arranged in front of the mulching film roller, digging can be conducted on one side below the mulching film roller to form a groove, dug soil is conveyed to the position behind the mulching film roller through the conveying structure, the conveying structure conveys the dug soil to the side edge of a mulching film, and the side edge of the mulching film is pressed in the groove through the soil. The mulching film can be further compacted, the possibility of mulching film displacement during hole sowing is reduced, the probability of seedling pressing under the mulching film is reduced, and therefore the yield of crops is increased.

This invention relates to the field of no-till seeding devices, and more particularly to a general-purpose no-till seeding device for wheat and rapeseed, comprising: a frame, rollers, a double-disc stubble-breaking blade, a seeding mechanism, and a covering roller; a storage bin is provided on the frame; the rollers are rotatably connected to the frame; an installation block is fixedly connected to the frame; the double-disc stubble-breaking blade is rotatably connected to the installation block; a motor for driving the double-disc stubble-breaking blade is provided inside the installation block; a support rod is fixedly connected to the installation block; in this invention, soil is moved to the crushing roller on a vibrating screen by a suction air pump, crushed into small soil particles, and then screened. The small soil particles fall into the furrow through a transfer funnel and a covering pipe to complete the covering. Subsequently, the covering roller lightly presses the soil to complete no-till seeding. Covering the seeds with small soil particles prevents seed hypoxia and soil compaction, thus avoiding restrictions on seed growth and germination.

According to the garden soil covering and quantitative topdressing integrated equipment, screws with different screw pitches are used as core metering elements in a screw push type fertilizer feeding mechanism, the large-range step type adjustment of the fertilizer feeding amount can be achieved by replacing the screws, the fertilizer feeding frequency can be finely adjusted by increasing or decreasing the number of toothed plates on a tooth missing gear, and the fertilizer feeding efficiency is improved. Due to the dual mechanism, the setting of the fertilizing amount is wide and accurate, and the adjusting mode is extremely visual and linear; the innovative tooth-missing gear transmission mechanism converts continuous power provided by the driver into intermittent rotation of the driving gear, so that the fertilizer discharging action of the propelling screw is strictly synchronous with the advancing process of the equipment, and the high consistency and repeatability of the fertilizing amount per unit area are ensured; the problem of non-uniform fertilization caused by the change of the pushing speed is fundamentally solved. The whole device is compact in structure, and effectively meets the core requirements of landscaping topdressing operation on lightness, simplification and precision.

The invention discloses a construction method for excavating an upside-down well wall of a deep foundation pit under an eccentric compression working condition. The construction method is suitable for an asymmetric load scene that the soil covering height of one side of a vertical shaft is obviously larger than that of the other side of the vertical shaft. The method comprises the steps that firstly, grouting is conducted on the periphery of the shaft wall of a vertical shaft under the current ground, and a soil body reinforcing area is formed; then, a mouth locking ring beam is constructed at a shaft mouth of the vertical shaft, an upper structure comprising a retaining wall, a reverse pressing plate, a retaining wall ring beam and a plate support is upwards constructed on the mouth locking ring beam, and soil covering side earthwork is synchronously backfilled to the level ground elevation in the construction process; next, an upside-down well wall method is adopted for subsection downward excavation, an annular arch frame, angle braces and anchor rod supports are constructed after each section is excavated, and an upper ring beam and a lower ring beam are arranged at the horsehead position and connected with the adjacent arch frames through vertical supports; and finally, concrete bottom sealing is conducted on the shaft completion face. The anti-overturning moment is formed through the reverse pressing plate and synchronous backfilling, and the problem of well wall instability caused by eccentric loads is effectively solved in combination with a multi-stage supporting system.

The utility model relates to a combined structure of a drainage closed conduit and a tunnel, the drainage closed conduit is arranged in the tunnel at the intersection of the drainage closed conduit and the tunnel, the tunnel comprises a tunnel bottom plate, two side walls and a tunnel top plate which are sequentially connected from bottom to top, the top of the drainage closed conduit is arranged on the tunnel top plate, and the side walls are provided with supporting notches. The drainage closed conduit is arranged on the tunnel top plate, so that the excavation depth of the tunnel in the construction process is reduced, the soil covering load of the top of the tunnel is reduced, the construction difficulty is reduced, and the safety risk of foundation pit collapse in the construction process is avoided, and the drainage closed conduit structure belongs to the technical field of municipal underground engineering.

The present application provides a hanging basket duckbill type pineapple transplanter with hole covering and pressing linkage function, and relates to the field of planting machinery. The pineapple transplanter comprises a walking driving system, a planting monomer assembly and a seedling bracket. The planting monomer assembly comprises a rotating disc fixing frame, a bias rotating disc mechanism, a hole digging duckbill assembly, a convex contact device and a rebound soil covering device. The bias rotating disc mechanism comprises a front rotating disc and a rear rotating disc. The hole digging duckbill assembly is hinged between the front rotating disc and the rear rotating disc. The convex contact device is fixed on the front rotating disc and the rear rotating disc. A plurality of hole digging duckbill assemblies and a plurality of convex contact devices are arranged in a circumferential interval about the front / rear rotating disc. The convex contact device is in top contact with the hole digging duckbill assembly. When the hole digging duckbill assembly starts to pull out upward, the hole digging duckbill assembly is opened. The rebound soil covering device is arranged on the lower side of the bias rotating disc mechanism. The soil covering shovel is installed on the inner side of the rebound rod. When the hole digging duckbill assembly pulls out the hole opening, the two side duckbills are separated from the soil covering shovel. The soil covering shovel resets the soil covering, and ensures the stability of the seedling root.

The utility model belongs to the technical field of refuse landfill closure, and provides a rainwater guide and drainage system for refuse landfill closure construction, which comprises a guide and drainage blind ditch arranged on the water incoming side of an anchoring ditch, and the guide and drainage blind ditch comprises a floral tube, a geotechnical filter screen and pebbles; the first end of the connecting pipeline is communicated with the floral pipe, and the second end of the connecting pipeline is communicated to the drainage pipe network. According to the rainwater guide and drainage system provided by the embodiment, the guide and drainage blind ditch is arranged on the incoming water side above the anchoring ditch and used for collecting rainwater, meanwhile, the floral tube is communicated with the drainage pipe network, and the overall on-film rainwater guide and drainage system is formed. In this way, rainwater does not flow into the anchoring groove but directly enters the drainage pipe network from the floral pipe, that is, sealing welding construction on the upper portion of the groove body does not need to be conducted after the anchoring groove is backfilled, cross construction of the seepage-proofing layer and backfilling soil of the anchoring groove can be avoided, and after construction of the seepage-proofing layer is completed, synchronous construction of the anchoring groove and soil covering on the film is achieved. Smooth guide and drainage of rainwater of the landfill are achieved, construction steps of closure are simplified, and the method has very high engineering guiding significance.

The utility model relates to the technical field of agricultural planting equipment, and discloses a seed sowing machine for agricultural planting, which comprises a main bracket, the upper part of the main bracket is laterally connected with one end of a first movable connecting piece through a first movable screw rod, and the other end of the first movable connecting piece is connected with one end of a handle bracket through a connecting screw rod; the other end of the handle support is connected with one end of a second movable connecting piece through a second movable screw, the other end of the second movable connecting piece is fixedly connected with a rotating shaft, a connecting rod is arranged on the rotating shaft and fixedly connected with a baffle chaining plate, and a plurality of guide pipe blocking pieces are welded to the baffle chaining plate at fixed intervals. And the guide pipe baffle plate can cover the bottom end of the seed guide pipe. According to the utility model, the handle bracket is arranged, so that the guide pipe separation blade welded on the baffle plate connecting plate can be directly pulled to be opened and closed, the seeding quantity can be accurately controlled, the automatic soil covering of the seeds can be realized, the repeated working steps of a user are simplified, and the seeding efficiency is improved.

The utility model belongs to the field of municipal engineering, and provides a pipeline socket and spigot joint reinforcing and protecting device which comprises two deflection protecting pieces. Each deflection protecting piece comprises a front extending part, a protruding part and a rear extending part which are sequentially connected. The two deflection protection pieces are symmetrically arranged and jointly form a sleeve structure, and the sleeve structure is coaxially arranged on the outer side of a pipeline socket and spigot joint in a sleeving mode. When the device is used, the water leakage point of the pipeline is determined firstly, then a working face meeting the installation requirement of the device is excavated at a connector, after the pipeline is corrected in place, the device is installed at the position of the connector, then a pipe bottom foundation is filled, and soil covering on the pipe side and the pipe top is completed. The device can reinforce and protect the deformed and fractured nodular cast iron pipe joint under the condition of not stopping the normal operation of the pipe network, can realize quick repair, reduce the excavation workload of a foundation pit, reduce the social influence caused by the stop operation of the pipe network and reduce the adverse influence on the environment, is simple and feasible, and can ensure the quality.