138 results about "Seed drill" patented technology

The invention provides an agricultural seeding machine, and relates to the technical field of seeding equipment, the agricultural seeding machine comprises a profiling frame installed on a rack, a furrow opener and a press wheel, the furrow opener and the press wheel are connected to the profiling frame, the profiling frame is a four-bar mechanism and is provided with a lower connecting rod and a first side connecting rod, and the furrow opener is rotatably connected to the first side connecting rod; a pressing wheel frame is hinged to the first side connecting rod, the pressing wheel is rotationally connected to the pressing wheel frame, and a pressing wheel spring is connected between the pressing wheel frame and the first side connecting rod; a locking rod is hinged to the first side connecting rod, a locking rod spring is connected between the locking rod and the first side connecting rod, a first locking tooth is arranged on the upper portion of the locking rod, a second locking tooth meshed with the first locking tooth is arranged at the end of the lower connecting rod, and a material stirring baffle is connected to the end of the locking rod. The material stirring baffle can rotate when stirring soil, so that the profiling frame is locked, the furrow opener cannot float upwards, the press wheel can roll and cross soil blocks, and the influence of vertical floating of the furrow opener in a short time on the furrowing depth can be reduced.

The present invention discloses a roller-type double-action finger-clamp precision seed drill, belonging to the technical field of seeding equipment. The seed-picking assembly includes a paddle, a second elastic element, and a finger clamp. The finger clamp includes two finger clamps, namely an active finger clamp and a passive finger clamp. The middle parts of the two finger clamps are hinged and the hinge point is fixed to the seeding disk. The second elastic element is used to push the heads of the two finger clamps to rotate in directions away from each other. During the rotation of the seeding disk, when the finger clamp rotates to enter the seeding opening, the passive finger clamp rotates under the action of the second elastic element to unload the seeds. When the finger clamp leaves the seeding opening, a cam drives the active finger clamp to rotate, causing the head of the passive finger clamp to extend into the shell. In the present invention, after the seeds are picked up by the finger clamp, they are clamped and protected by the two finger clamps, thereby separating from the inner wall of the shell. Therefore, when the finger clamp continues to rotate, the seeds no longer rub against the inner wall of the shell, which is beneficial to protecting the seeds and reducing the friction damage they suffer, which is beneficial to improving the survival rate of the seeds.

An improved bulk transfer system for an agricultural seeder or planter breaks up the central fill system into two stages for supplying a plurality of agricultural products simultaneously to an array of metering pods, each pod containing a plurality of metering assemblies. Firstly, there is a continuous transfer of agricultural product from a trailing product cart to intermediate mini tanks mounted on a central frame and located adjacent the seeding drills and plurality of metering assemblies. The pressurized mini tanks receive agricultural products on demand. Secondly, agricultural products are transferred on demand from the mini tanks to each of the corresponding metering assemblies along the seeding drill. This arrangement enables redistribution of the weight of the bulk of the product farther away from the seeding drills, allowing for greater tow-behind product volumes.

The present invention relates to the field of seed drill control technology, and discloses a sowing depth control device for corn no-till sowing with synchronized single-body movement. The device comprises a sowing depth detection system, a traction frame, a transverse tube, multiple contoured depth-limiting wheels, and multiple sowing units with mechanical parallelepiped contouring structures. The device also comprises a longitudinal adjustment mechanism fixedly connected between the sowing units and the transverse tube. The sowing depth detection system controls the movement of the longitudinal adjustment mechanism via multiple hydraulic cylinders, adjusting the lateral height of the sowing units by varying the height, thereby adjusting the sowing depth according to the terrain. The transverse adjustment mechanism is installed between the transverse tube and the traction frame. The sowing depth control device for corn no-till sowing with synchronized single-body movement can adjust the sowing depth in multiple directions, is suitable for sowing operations on various complex terrains, and can also adjust the posture of the seeder to ensure stable seeding by the seeder.

The invention discloses a seeder real-time dynamic differential positioning and control system based on Beidou navigation, and relates to the technical field of high-precision positioning, and the system obtains the real-time information of a seeder with centimeter-level precision through a Beidou real-time dynamic differential positioning module receiver; a three-dimensional space trajectory is generated through a path prediction module; the shared preamble conditioning unit array module array actively performs micro seedbed pretreatment in the corresponding path area according to the predicted trajectory; the load prediction module fuses the real-time resistance feedback signal with the position information, and predicts the change trend of the load to be encountered by the whole machine; and the dynamic control module is used for generating and executing a predictive adjustment instruction for the overall operation parameters of the seeding machine in a feedforward mode according to the load prediction, and the dynamic control module is used for generating and executing the predictive adjustment instruction for the overall operation parameters of the seeding machine through active microenvironment molding under the guidance of a predictive path and predictive dynamic control based on physical interaction feedback. The seeding quality consistency, the machine operation stability and the energy efficiency are obviously improved, and precise seeding is realized.

The invention relates to an agricultural seed drill (10) for dispensing seed over an area of agricultural land (N), having multiple coulter rows (12a–12c) positioned one behind the other and mutually spaced in the travel direction (F) of the seed drill (10) and extending parallel to one another transversely with respect to the travel direction (F) of the seed drill (10), wherein multiple seed coulters (14) are mutually spaced along each of the coulter rows (12a–12c). The seed drill also has multiple actuators (16a–16c), at least one actuator (16a–16c) from among the multiple actuators (16a–16c) being located on each of the coulter rows (12a–12c), and the actuators (16a–16c) being designed to align the seed coulters (14) located on the coulter rows (12a–12c) by exerting an actuator force (A1–A3) on the coulter rows (12a-12c) relative to the soil (B) of an area of agricultural land (N).

The utility model discloses a land wheel mud shoveling device, relates to the sower technical field, the land wheel mud shoveling device includes mounting rack and mud shoveling plate, mounting plate through bolt connection to the outer wall of mounting rack, connecting plate through bolt connection to the outer wall of mud shoveling plate, the top of connecting plate is fixedly connected with buffer plate. The adjusting nut is rotated clockwise to drive the distance between the adjusting plate and the buffer plate to be reduced, namely, the spring is extruded, so that the force of the mud shoveling plate tightly attached to the land wheel is increased, and the situation that the mud shoveling plate is directly turned upwards to cause the failure of the torsion spring is avoided when sowing is performed on the terrain with higher viscosity of ground soil blocks and more ground straws and weeds; the adjusting nut is rotated anticlockwise to drive the distance between the adjusting plate and the buffer plate to be increased, namely, the elastic force of the spring is reduced, so that the force of the mud shoveling plate tightly attached to the land wheel is reduced, and the abrasion of the mud shoveling plate is reduced when sowing is carried out on the terrain with small ground soil block viscosity and few straw weeds.

The invention relates to the technical field of seeding machines, in particular to a multi-crop self-adaptive variable seeding machine which comprises a stock bin filled with crop seeds, a seed-metering device module communicated with the stock bin and used for intermittently discharging or continuously discharging the seeds in the stock bin under the driving of land wheels, and a switching assembly arranged on the seed-metering device module and used for switching the seeds in the stock bin. The switching module is used for switching a seed metering state of intermittently discharging seeds or continuously discharging seeds by the seed metering device module; the invention has the following beneficial effects: when the handle is rotated, the threaded rod generates axial displacement, and the connecting rods at two sides are driven to swing synchronously through the clamping structure of the threaded rod and the connecting rods, so that the position switching of the baffle plate and the meshing state of the transmission block are controlled in a linkage manner, and one-key rapid switching of seeding modes is realized. According to the design, the synchronism of actions of the clamping units on the two sides is ensured through mechanical linkage, switching between hole sowing and drill sowing can be achieved without detaching the device, only a handle needs to be rotated, and the switching mode is simple and convenient.

The invention belongs to the technical field of agricultural seeding mechanical equipment, and particularly relates to a posture-adjusting type high-speed precision seed-metering device before corn filling, which comprises a seed inlet pipe, a front shell, a seed protecting plate, a seed-metering wheel, a rear shell and a transmission shaft which are sequentially arranged from front to back, the transmission shaft sequentially penetrates through the rear shell and the seed-metering wheel from back to front, and drives the seed-metering wheel to rotate through the cooperation of a hexagonal prism structure of the transmission shaft; the seed inlet pipe and the front shell are adhered to the front side of the shell through glue; the front end of the seed protecting plate is connected to the inner side of the front shell through a bolt; the front shell and the rear shell are connected through a bolt to jointly form a cylindrical seed metering cavity; by arranging the V-shaped posture adjusting opening structure, the V-shaped posture adjusting opening is formed in the front end of the hole, the upper side and the inner side of the V-shaped posture adjusting opening are both V-shaped faces, overturning torque is applied to normal and vertical corn seeds, the corn seeds are adjusted to be in a parallel posture before seed filling, the corn seed filling capacity is improved, and the miss-seeding rate of the seed metering device is reduced.

The present invention relates to the technical field of seed drills, and specifically provides an automatic seed drill for small-particle seeds, comprising: a frame, a traction mechanism, a guide slide rail, a seeding barrel, a driving mechanism, a seeding head, a hopper body, a discharging barrel and a discharging mechanism, wherein the traction mechanism is arranged on the frame; the guide slide rail is arranged on the frame in a vertical direction; the seeding barrel passes through the frame and is slidably connected to the frame, and is slidably connected to the guide slide rail; the driving mechanism is connected to the seeding barrel; the seeding head is detachably connected to the bottom end of the seeding barrel and is communicated with the inner cavity of the seeding barrel; the hopper body is arranged above the seeding barrel; the discharging barrel is arranged at the bottom end of the hopper body, is communicated with the inner cavity of the hopper body, and is arranged directly above the seeding barrel; the discharging mechanism is arranged at the discharging barrel; the present invention effectively solves the problems in the prior art of low automation of shovel-type seeders and the unsuitability of large-scale intelligent seeders for sowing in small grain fields of farmers, thereby achieving the purpose of improving sowing efficiency and low production cost.

The invention relates to an agricultural seed drill (10) for sowing seed on an agricultural area (N) with several rows of coulters (12a-12c) arranged one behind the other and spaced apart from each other in the direction of travel (F) of the seed drill (10) and extending parallel to each other transversely to the direction of travel (F) of the seed drill (10), wherein several seed coulters (14) are arranged spaced apart from each other along each row of coulters (12a-12c), and several actuators (16a-16c), wherein at least one actuator (16a-16c) of the several actuators (16a-16c) is arranged on each row of coulters (12a-12c), wherein the actuators (16a-16c) are configured to move the seed coulters (14) arranged on each row of coulters (12a-12c) relative to the ground by exerting an actuator force (A1-A3) on the rows of coulters (12a-12c). (B) to align with an agricultural area (N).

The utility model relates to the technical field of seeding machines, and provides a close planting corn seeding machine which comprises a seeding box and a rectangular plate, the rectangular plate is fixed at the bottom of the seeding box, a soil turning assembly is arranged outside the seeding box, a moving assembly is arranged at the bottom of the seeding box, an inserting assembly is arranged in the seeding box and the rectangular plate, and rectangular openings are formed in the rectangular plate. The top of the rectangular opening is communicated with the interior of the seeding box, a pair of round rods is arranged on the inner side of the seeding box, the round rods are slidably sleeved with a lifting frame, and a plurality of seeding insertion rods are arranged at the lower end of the lifting frame. By means of the technical scheme, the problems that most existing seeding machines for corn planting in the prior art are large in size, difficult to carry to fields with poor road conditions and not suitable for small-scale planting, seeds cannot be conveyed to the enough depth in fields with hard soil, the survival rate is low, or the seeding interval cannot be adjusted, and the seeding efficiency is low are solved. And the method is not suitable for all lands.

The invention relates to an agricultural spreading machine (10), in particular a seed drill, with a boom (1) supported by several adjacent support wheels (2) against an agricultural field (F) and extending transversely to the longitudinal direction (L) of the vehicle, wherein several metering elements (5) are arranged on the boom (1) by means of which a material to be spread can be applied to the field (F) when the spreading machine (10) moves in a track (F1) across the field (F), wherein the spreading machine (10) can be turned in the headland (V) by driving around a curve so that it can be moved in the opposite direction across the field (F) in the next track (F2), wherein the boom (1) has several boom segments (1.1, 1.2, 1.3, 1.4) and each boom segment (1.1, 1.2, 1.3, 1.4)4) is supported by at least one support wheel (2) opposite the field (F), wherein, when driving around the headland (V), the support wheel (2) of the boom segment (1.1, 1.4) located furthest inside the curve can be raised.

The invention relates to an agricultural seed drill (10) for dispensing seed over an area of agricultural land, having a row arrangement (12) comprising multiple coulter rows (14a–14c) which extend transversely to the travel direction (F) of the seed drill (10) and are mutually spaced in the travel direction (F) of the seed drill (10), each coulter row (14a–14c) having multiple seed coulters (16) which are positioned adjacent to one another and transverse to the travel direction (F) of the seed drill (10) and are mutually spaced on the respective coulter rows (14a–14c). The seed drill also has a coulter pressure adjustment device for adjusting the coulter pressure of the seed coulters (16) in the coulter rows (14a–14c).

Agricultural sowing and planting implement whose drive and traction mechanism uses the tractor as traction, characterized in that it comprises: a welded assembly consisting of a front frame and engine mount, a front axle with a steering group, a rear axle with a gearbox and a complete milling unit, a rear frame, a right-left threaded rod, a hydraulic cylinder and an engine, wherein the front axle with the steering group is mounted on the front of the welded assembly consisting of a front frame and engine mount, the rear frame is attached to the rear of this welded assembly and comprises a sliding outer square tube; the welded assembly consisting of a front frame and engine mount comprises the front frame, the engine mount and a sliding inner square tube; the engine is mounted on the engine mount, the engine mount on the outer sliding square tube, which encloses the inner sliding square tube;The rear axle with transmission and complete tilling unit comprises a rear wheel group, a transmission, an agricultural implement, a fixed square tube, and a height adjustment device. The transmission is pivoted on the rear frame and connected to the engine via a V-belt, allowing both to operate synchronously. The transmission is connected to the agricultural implement and the rear wheel group, whereby the agricultural implement can be a rotary tiller, stubble cultivator, trencher, ridge former, weed control machine, vine cover machine, seed drill, or fertilizer.

The invention discloses a ginger seeding machine and a seeding method, and relates to the technical field of ginger seeding machines, the ginger seeding machine comprises a ginger seeding vehicle, a driving motor is fixedly mounted at the top end of one side of the ginger seeding vehicle, and a seeding controller is fixedly mounted at the top end of one side of the ginger seeding vehicle; a control connecting line is fixedly connected between the seeding controller and the driving motor. A driving motor is arranged to control rotation of a rotary telescopic column, meanwhile, the position height of a telescopic adjusting column in the rotary telescopic column is controlled, holing operation is achieved through a holing drill, the driving motor is used, control operation is achieved by connecting a control connecting line between seeding controllers, operation is easy and convenient, and the seeding efficiency is improved; and when the hole drilling drill is not used subsequently, the hole drilling drill can be directly retracted into the rotary telescopic column through the telescopic adjusting column, at the moment, soil on the surface of the hole drilling drill can be directly cleaned, and the hole drilling efficiency of the hole drilling drill is guaranteed.

The present invention discloses a novel seed drill, comprising a frame and a transmission system, wherein a support assembly is detachably connected to the frame, a drum is rotatably connected to the support assembly, auxiliary assemblies are rotatably connected to both ends of the drum, a feeding assembly is also detachably connected to the support assembly, an adjustment assembly is also detachably connected to the frame, a driving member is detachably connected to the support assembly, the drum comprises a silo, fixed rings are symmetrically and slidably connected at both ends of the silo, a disassembly assembly and a counterweight rod are respectively installed between the two fixed rings, the two ends of the disassembly assembly are respectively rotatably connected to the two fixed rings, the two ends of the counterweight rod are respectively detachably connected to the two fixed rings, and a drive shaft is fixedly connected to the sides of the two disassembly assemblies. The present invention has simple and accurate height adjustment through the adjustment assembly, and can adapt to seeding trays of different thicknesses and the substrate in the seeding trays. Through the cooperation of the disassembly assembly and the fixed rings, the silo can be simply and quickly replaced to adapt to different seed diameters without affecting the sowing accuracy.

1. The name of the product under this design: seed drill. 2. Purpose of this design product: This design product is an agricultural machine used for grain sowing. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the key points of the design: main view.

The utility model discloses a seeder body balancing device which comprises two sliding rails, the two sliding rails are both fixedly connected between the tops of two hanging plate welding parts, the two sides of the tops of the two sliding rails are both fixedly connected with bearing seats, and an intermediate transmission shaft penetrates through the position between the opposite sides of the two bearing seats; and an output shaft of the motor is fixedly connected to one end of the transmission shaft. The position of the balancing weight is electrically adjusted, the degree of freedom is large, time and labor are saved, cost is relatively low, the device can be installed on an original seeder body, the situation that when the seeder works on slope cropland, fertilization and seeding parts on one side are not compact on the ground or sideslip is avoided, and the pressure of the seeder on the side with small ground pressure in hilly and mountainous areas is increased; the structure of the seeder does not need to be excessively changed, and the seeder is simple to mount and high in practicability.

The utility model relates to a seeding machine single body down pressure control hydraulic system, a hydraulic system and a seeding machine, and the seeding machine single body down pressure control hydraulic system comprises a tractor main control valve, a pressure valve, a proportional valve and a piston rod which is used for connecting an oil cylinder of a seeding machine single body, an oil outlet 1a of the tractor main control valve is communicated with a two-way oil port 3a and a pilot oil port 3b of the pressure valve and an oil inlet 5a of the proportional valve at the same time, an oil outlet 5b and a two-way oil port 5c of the proportional valve are communicated with a rodless cavity 8a of the oil cylinder at the same time, and a rod cavity 8b of the oil cylinder is communicated with a two-way oil port 3c of the pressure valve. And an oil outlet 5d of the proportional valve is communicated with an oil return port 1b of the tractor main control valve. According to the utility model, the technical problem that the seeding accuracy is difficult to guarantee as the seeding pressure of the existing seeding machine monomer cannot be effectively adjusted according to the hardness of soil can be solved.

The utility model relates to the technical field of seeding machines, in particular to a cleaning device for a press wheel of a seeding machine with good stability, which comprises a bottom plate, the right side of the top of the bottom plate is fixedly connected with a box body, and the front side of the top of the box body is fixedly connected with a uniform maintenance mechanism. Through cooperation of the oil box, the second pump, the installation frame, the first push rod and the pipe frame plate, the uniform maintenance function is achieved, firstly, the second pump and the first push rod are started through the controller, the second pump operates to extract oil from the interior of the oil box, finally, the oil is sprayed to the wheel body through the oil spraying pipe, and the first push rod can drive the oil spraying pipe to transversely move through the pipe frame plate to conduct uniform spraying. The mechanism can effectively and uniformly maintain the wheel body, so that the wheel body can be effectively prevented from being still easily stained with a large amount of mud during subsequent use, the effect of reducing the adhesion speed of the mud is achieved, meanwhile, the abrasion of the wheel body can be reduced after the wheel body is coated with oil, and the service life of the wheel body is prolonged.

The corn and soybean intercropping planting integrated sowing device belongs to agricultural machinery; the circular groove type seed divider box shell, the circular groove type corn seed box shell and the circular groove type soybean seed box shell are sequentially matched on the circular groove type seed sowing box shell body, the arc-shaped rod soybean stirring disc and the straight rod corn stirring disc, the gear disc type corn stirring seed wheel are rotatably matched in the circular groove type soybean and corn seed box shell body, the motor A is connected with the arc-shaped rod soybean stirring disc and the straight rod corn stirring disc, the gear disc type corn stirring seed wheel through the driving shaft, the automatic seed taking and throwing mechanism including the cam assembly, the circular groove type connecting shell, the spoke wheel, the connecting rod, the cylinder sleeve, the piston, the push-pull rod and the mechanical hand clamping arm is matched in the circular groove type seed sowing box shell body and is driven by the motor B, the soybean seed sowing pipe and the corn seed sowing pipe are respectively matched on the rear side of the seed furrow opener; the device realizes the synchronous sowing of the soybean and corn intercropping, has wide application range, high generalization degree, simple and convenient intercropping planting change adjustment.

The present invention discloses a satellite radar ground wheel speed measurement unequal spacing intelligent control electric seed drill, which relates to the technical field of seed drills, including a machine body, a satellite radar ground wheel speed measurement component installed on the machine body, a placement table and a support frame fixedly installed on the machine body, a seed box fixedly installed on the placement table, a tube 1 fixedly connected to the support frame, a plurality of tubes 2 slidably connected to the support frame, and a feeding component installed between the tubes 1 and 2 and the seed box. The advantages are: the satellite radar ground wheel speed measurement component facilitates the adjustment of the seed spacing before or during seeding according to the specific sowing area and the driving speed of the machine body, which facilitates better precision sowing, and with the cooperation of the seed drop sensor, the reseeding drive component and the control change component, the sowing can be effectively monitored. When missed sowing is detected, reseeding can be quickly carried out, effectively improving the uniformity and efficiency of seed sowing.

The utility model provides an efficient agricultural seeder material storage device which comprises a material storage hopper, the material storage hopper is divided into a plurality of material storage bins by partition plates, a material conveying device is arranged in each material storage bin, each material conveying device comprises an annular conveying chain, a plurality of material grabbing discs are arranged on the conveying chain at equal intervals, and the material grabbing discs are arranged on the conveying chain. A half of the conveying chain with a downward opening of the material grabbing disc arranged on the conveying chain is arranged outside the storage hopper, a half of the conveying chain with an upward opening of the material grabbing disc arranged on the conveying chain is arranged inside the storage hopper, the conveying chain is obliquely arranged, a hole is formed in the bottom of the storage hopper, the conveying chain penetrates through the hole, the top of the conveying chain is meshed with a first gear, and the second gear is meshed with a second gear. The bottoms of the first gears are meshed with second gears, the first gears are fixedly connected with the first rotating shaft, and the second gears are fixedly connected to the second rotating shaft. Large-scale automatic planting of large seeds such as potatoes and garlic can be achieved, the conveying chain is obliquely arranged, it can be guaranteed that the seeds fall down smoothly, and planting efficiency is high.

A laser through-beam type missed seeding detection device for a seed drill comprises a seed drill base (1); a plurality of seed drill ground wheels (4) are provided on the lower side of the seed drill base; a seed box (2) is mounted on the upper side of the seed drill base; a seeding tube (6) communicated with the seed box is mounted below the seed drill base; an acousto-optic alarm (3) is mounted on the upper side of the seed drill base; a connecting assembly (5) is slidably and elastically fitted with one side of the seed drill base; and missed seeding detection assemblies (7) electrically connected to the acousto-optic alarm are symmetrically arranged on two sides of the inner wall of the seeding tube. Further disclosed is a laser through-beam type missed seeding detection method for a seed drill. Once missed seeding is detected, an acousto-optic alarm gives an alarm, thereby intuitively informing an operator of the occurrence of an anomaly during seeding.

The present invention is applicable to the technical field of seed drills and provides a seed drill that maintains the original surface layer of the soil, including a machine body, an angle adjustment unit hinged on a longitudinal frame one and a longitudinal frame two at the bottom end of the machine body, a directional feeding unit located between the angle adjustment units on both sides, a crushing unit rotatably installed at the bottom ends of the longitudinal frame one and the longitudinal frame two, a feeding system installed in the machine body, an anti-blocking unit arranged at the top ends of the longitudinal frame one and the longitudinal frame two, and a working end of the anti-blocking unit contacts the feeding system when rotating; this seed drill can not only shovel up the soil layer and transfer the soil layer through the provided scraper, conveyor belt and feeding plate when the seed drill moves, thereby maintaining the integrity of the original surface layer of the soil, but also can crush the shallow soil layer, so that the soil layer is in a loose state, which is convenient for applying fertilizer and seeds and effectively mixing them together, providing a suitable growth environment for the seeds, and can effectively improve the survival rate and growth state of the seeds.

The present invention relates to the technical field of seed drills and discloses a cotton seed drill in a melon-cotton interplanting mode, wherein a film retracting roller is provided at the upper front end of a frame, a supporting wheel and a guide wheel driven between the two sets of supporting wheels are provided in the middle of the lower end of the frame; a middle connecting cylinder is centrally installed at the rear end of the lower end of the frame, and both ends of the middle connecting cylinder are movably connected with a soil covering roller; when the frame of the present invention moves forward, the supporting wheel pulls out the film on the film retracting roller through the guide wheel and spreads it flat on the ground, and the soil in the soil covering roller is laid on the film at intervals, which can simultaneously realize the covering and compaction of the film, improve the seeding efficiency and ensure that the soil will not be blown away by strong wind after compacting the film; when the soil covering roller rolls, the driving assembly is also used to drive the stirring assembly in the middle of the soil covering roller to rotate, and the soil covering roller and the stirring assembly rotate in opposite directions, which can improve the stirring and crushing of the soil in the soil covering roller to prevent the soil from being blocked in the soil covering roller.

The utility model relates to the technical field of seeding machines, in particular to a mark marking device. Which comprises a support and is characterized in that a telescopic rod capable of being driven by a driving mechanism to rotate is installed on the support, an adjusting rod is installed at the end, away from the support, of the telescopic rod, a marking disc is installed at the bottom of the adjusting rod through an adjusting mechanism, and the adjusting mechanism can enable the marking disc to conduct up-down floating adjustment along with changes of the terrain. Through the structure, the position of the marking disc can be adjusted along with the fluctuation of the terrain when the marking disc works, so that the marking continuity is ensured, and the marking effect is enhanced; in addition, through non-rigid connection, the marking disc of the marking device has a buffering effect, and therefore the service life of the marking device is prolonged.

The utility model relates to the technical field of drill planters, in particular to a drill planter seed guide pipe frame lifting device and a drill planter, the drill planter seed guide pipe frame lifting device comprises a seed guide pipe frame and sliding rails, the sliding rails are symmetrically arranged at the two ends of the seed guide pipe frame, and the sliding rails extend in the vertical direction; the two ends of the seed guide pipe frame are respectively connected with the two sliding rails in a sliding manner, and limiting mechanisms are arranged at the bottoms of the sliding rails; a limiting hole is formed in the middle of the sliding rail, limiting shafts are arranged at the two ends of the seed guide pipe frame through elastic mechanisms, and the limiting shafts are inserted into the limiting hole under the driving of the elastic mechanisms; lever mechanisms are arranged at the two ends of the seed guide pipe frame, the middles of the lever mechanisms are used for being rotationally connected with a drill seeder support, and one end of each lever mechanism is rotationally connected with the end of the seed guide pipe frame. The device is convenient and labor-saving to operate, the seed guide pipe frame is lifted and descended by virtue of the lever principle and the sliding rail, so that the seed guide pipe frame is separated from the seed-metering device, and the convenience of operation is improved.

A calibration device and method for calibrating, via a handheld drill, a seed drill having a calibration shaft. The calibration device comprises a housing, an input shaft, a transmission, and an output shaft. The input shaft and output shaft extend from opposite sides of the housing. The transmission drivably connects the input shaft to the output shaft so that rotation of the input shaft results in rotation of the output shaft. The output shaft is configured to drivably engage the calibration shaft. The input shaft is configured to be actuated via the handheld drill.