130 results about "Land leveling" patented technology

The invention relates to the technical field of saline-alkali soil improvement, in particular to a saline-alkali soil treatment and improvement method which comprises the following steps: S1, early-stage investigation and planning; s2, physical improvement; s3, chemical improvement; s4, biological improvement; s5, irrigation improvement; s6, later monitoring and maintenance; according to the saline-alkali soil treatment and improvement method, a traditional single improvement mode is broken through, physical, chemical, biological and engineering technologies are fused, a systematic improvement scheme is formed, and physical improvement effectively improves the soil structure and accelerates salt discharge through land leveling, deep ploughing, upturned soil sunning and concealed pipe laying for drainage; a soil conditioner and an acidic material are precisely applied for chemical improvement, and the soil acidity and alkalinity and ion composition are adjusted; in biological improvement, salt is absorbed by virtue of salt-tolerant plants and microbial agents, and soil microbial communities are improved; a fresh water resource or salt water desalination technology is reasonably utilized for irrigation improvement, and salt leaching and water resource recycling are achieved; through the synergistic effect of multiple means, the salt content of soil can be more efficiently reduced, and the soil structure is improved.

The invention discloses a restoration method for improving salinized grassland, and relates to the technical field of ecological environment restoration. Physically, a laser land leveling instrument is combined with topographic surveying and mapping to control the land flatness, and an intelligent irrigation and drainage system is constructed; chemically, a novel composite modifier is prepared to regulate soil; biologically, saline-alkaline tolerant grass seeds are treated to construct communities, and microbial agents are applied. And meanwhile, a monitoring network is constructed for precise monitoring and regulation, the cost is reduced by utilizing agricultural wastes and local materials, and sustainable development is realized. The method can effectively reduce the soil salinity, adjust the pH value, improve the vegetation coverage rate, increase the number of soil organic matters and microorganisms, and realize saline-alkali grassland soil improvement, vegetation recovery and ecological sustainable development.

The invention belongs to the technical field of farmland reclamation, and particularly relates to high-standard farmland reclamation land leveling equipment which comprises a traction harrow body, a traction frame is welded to the front side of the upper surface of the traction harrow body, a coupler is fixed to the front side of the upper surface of the traction harrow body, and wheels are fixed to the four corners of the traction harrow body. The device is provided with the stone removing assembly, so that effective separation of stones, residual roots and larger soil blocks and soil particles can be realized, the influence of the stones on subsequent cultivation and irrigation operation is avoided, and the situation that the residual roots possibly carry diseases and pests to cause harm to crop growth is prevented; according to the device, the soil purity is guaranteed, the cultivability of the land is improved, the hindrance of subsequent farming operation is reduced, the situation that equipment is damaged or the operation effect is affected due to residual stones and residual roots during sowing, irrigation and other operations is avoided, and the safety and efficiency of farmland operation are improved.

The invention relates to the technical field of agricultural machinery, in particular to a self-propelled multifunctional dry land leveler and an operation method, and the self-propelled multifunctional dry land leveler comprises a machine body, a tillage component, a soil taking component, a conveying component, a stock bin, a soil discharging component, a land leveling device and the like. The tilling part is arranged at the front end of the land leveler, so that the tilling depth can be controlled according to elevation data; the soil taking component and the conveying component are arranged, so that surface soil after cultivation can be collected to the feeding end of the conveying component, and the soil is further conveyed to the stock bin through the conveying component; a soil discharging part is arranged, and soil in the stock bin can be evenly spread to the ground lower than the datum plane according to elevation data; the rear end of the machine tool is also hooked / dragged with the leveling equipment, and the final leveling operation process can be realized according to the elevation data.

The invention relates to the technical field of agricultural machinery, in particular to a vegetable greenhouse ploughing and soil preparation all-in-one machine which comprises a swing structure, a rotary plough structure and a control system, the swing structure comprises a mounting frame, a main beam, a telescopic structure and a main beam driving structure, the main beam is rotationally mounted on the mounting frame, and the main beam driving structure is arranged between the mounting frame and the main beam; the main beam driving structure is used for driving the main beam to rotate, the telescopic structure is arranged on the main beam, the telescopic structure and the main beam driving structure can work in a matched mode, rotary plough blades transversely plough in a reciprocating mode, soil in a greenhouse can be ploughed only by advancing a tractor for one or two times, frequent back-and-forth turning and reversing are omitted, and the labor intensity of workers is reduced. The structure is not provided with a multi-connecting-rod rocker arm structure, during swinging, the rotary tillage structure linearly reciprocates, no dead angle exists when the rotary tillage structure is used in a greenhouse, obstacles such as stand columns can be avoided, and the rotary tillage structure is very suitable for being used in the vegetable greenhouse.

The invention discloses an all-solid-waste-based cementing material for inducing chlorine salt in waste incineration fly ash by using active magnesium oxide and a preparation method of the all-solid-waste-based cementing material. According to the invention, active magnesium oxide is utilized to induce in-situ conversion of the chlorine salt in the waste incineration fly ash into the cementing material, so that the problems of unstable curing system and potential secondary environmental pollution caused by harmful impurity chlorine salt are effectively improved, and the reaction degree and strength development of the cementing system are promoted under the action of co-processing the copper-containing electroplating sludge; and meanwhile, it is guaranteed that the heavy metal leaching concentration of the system meets the GB / T 16889-2008 national safety landfill standard. The cementing material prepared by the invention is expected to be used as building materials for roadbeds, land leveling, pit backfilling and the like, effectively widens the value-added utilization mode of solid wastes, realizes efficient toxicity reduction of the waste incineration fly ash, has positive influence on the environment, society and economy, and has wide application prospects. And an innovative sustainable development mode is provided for resource utilization of solid wastes and green transformation of the building industry.

The invention discloses a method for improving the quality of cultivated land through mixed sowing of perennial beans, grasses and forage grass. The method comprises the steps that deep ploughing and soil turning are conducted, land leveling is conducted, and organic fertilizer is applied to serve as base fertilizer; the method comprises the following steps: determining a mixing ratio of leguminous forage grass to gramineous forage grass of 3: 7-1: 1, and carrying out mixing pretreatment on the two forage grass seeds, namely preparing a nano titanium dioxide solution containing various nutrients and trace elements, screening stress-resistant domesticated rhizobium, disinfecting, soaking, coating and the like; reasonably topdressing in the forage grass growth period; when the pasture grows to a specific stage, the pasture is cut for 2-3 times every year; after 3-5 years of continuous utilization, crop rotation is carried out, and deep ploughing and fertilization are carried out again. According to the seed mixing pretreatment mode, the operation process is simplified, the cost is reduced, balanced nutrition supply is guaranteed, synchronous germination of seeds and coordinated growth of seedlings are promoted, and the fertilizer utilization rate is increased. The screened adversity-resistant domesticated rhizobium enhances the stress resistance of mixed sowing grassland, improves the yield and quality of alfalfa, and further improves the overall quality of mixed sowing pasture.

The invention provides an ecological restoration method for backfilling dehydrated slime into a bauxite goaf, which comprises the following steps of: backfilling filtered and dehydrated slime into the goaf, and covering soil; and then land leveling, slope treatment, soil improvement, irrigation and drainage engineering, field road construction, farmland protection, ecological environment protection, science and technology supporting service and other processes are carried out. Organic fertilizers (such as pig manure and chicken manure) and a biological silicon fertilizer are added on the basis of an inorganic fertilizer, so that the physical and chemical properties of soil are more effectively improved, and meanwhile, the risk of heavy metals in the soil is reduced; by implementing a terraced field slope descending measure in the goaf, the land is smoother, water and soil loss is effectively prevented, the soil fertility is kept, the repaired land can be returned to farmers for planting common crops such as corn, peanuts and cassava, the income of the farmers can be increased, and local agricultural development can be promoted.

The application relates to the technical field of agricultural machinery, in particular to a land leveler for fine and deep application of organic fertilizer, which comprises a device whole, a push leveler for land leveling is arranged on the device whole, a ditching shovel and a fertilizer pipe are arranged below the device whole, an arc bending block is arranged on one side of the fertilizer pipe close to the ditching shovel, a baffle is fixedly arranged in the fertilizer pipe, a hydraulic rod is fixedly arranged in the fertilizer pipe, a fixed sliding block is fixedly connected to the power output end of the hydraulic rod, a limiting pipe is rotatably connected to one side of the fixed sliding block, a torsional spring is arranged between the limiting pipe and the fixed sliding block, and a sliding rod is slidably connected to the limiting pipe. In the process of use, the arc-shaped scraper can scrape off the organic fertilizer adhered to the arc bending block in the fertilizer pipe, so that the fertilizer pipe is prevented from being blocked by the accumulated organic fertilizer.

1. The name of the design product: the body of excavator. 2. The use of the design product: used as a whole for earthwork excavation, loading, land leveling, crushing, demolition and other operations, and used locally for the body of excavator. 3. The design points of the design product: the body of excavator. 4. The picture or photo that best indicates the design points: perspective view 1. 5. Other circumstances that need to be explained: the design application is a partial appearance, the part requested for protection is the part without red coating, the above-mentioned colors are only for determining the protected part, and the design does not request protection of colors.

The application discloses a method and system for automatic land leveling control of excavators based on visual laser fusion, and relates to the field of automatic control of engineering machinery. The method obtains three-dimensional terrain point clouds of a working area through a binocular vision acquisition module, combines reference height signals of a laser leveling instrument and body posture data of an IMU, and constructs a global dynamic terrain model through a multi-sensor fusion algorithm. According to preset land leveling parameters, a target path for shovel operation is generated, joint control amounts of a swing arm, a dipper arm and a shovel are calculated in combination with kinematic inverse solution of the excavator, and finally, adaptive land leveling operation of the shovel is realized through a hydraulic actuator. The application solves the problems of traditional manual land leveling, such as dependence on experience, low precision and poor efficiency, significantly improves land leveling operation precision and efficiency, reduces labor intensity of operators, and is suitable for road subgrade leveling, building site excavation and leveling, farmland reconstruction and other scenes.

The invention relates to the technical field of tamping equipment, and discloses land leveling and tamping equipment which comprises a flat plate, an engine is fixedly mounted at the top end of the flat plate, a fixing box is fixedly mounted at the top end of the flat plate, and a rotating shaft is rotatably connected to the middle of the fixing box; transmission wheels are fixedly mounted at the front end of the rotating shaft and the output end of the engine, and transmission belts are in transmission connection with the surfaces of the transmission wheels. Fan blades are arranged on a rotating shaft, air inlet boxes are installed on the two sides of the device, when the device conducts tamping operation, rotation of the rotating shaft can drive the fan blades to rotate, suction force is generated in a fixing box, and external air is mixed with dust to enter the air inlet boxes through the combined action of a fixing pipe and a connecting pipe; therefore, dust generated in the working process is sucked into the air inlet box, the situation that dust is too much in the working environment is avoided, the situation that the dust is sucked by workers is avoided, and the health of the workers is guaranteed.

The utility model discloses a rotary tillage soil moisture leveling device for a soil moisture leveling plough, and belongs to the field of agricultural machinery. A plough frame and left and right plough shares mounted on the plough frame are arranged at the front end of the rotary tillage soil moisture leveling device, a double-end transmission gearbox is arranged above the plough frame, and the front side of the double-end transmission gearbox is in transmission connection with a power output device (such as a tractor). A rotary tillage knife rest, an upper soil retaining plate, a gear box, a knife shaft bearing seat assembly, a knife shaft, a soil shifting knife, a soil breaking knife, a rear soil retaining guide plate and the like are arranged at the rear end of the rotary tillage soil moisture leveling device. The gearbox is in transmission connection with the double-end transmission gearbox through a transmission device; the tool rest is connected with the plow frame through a special installation assembly and is provided with a suspension structure adapting to topographic relief. And the tail part is provided with an angle-adjustable soil plastering plate and an adjusting assembly. The machine can effectively adapt to different terrains, achieves efficient soil treatment and accurate soil moisture leveling, and is suitable for agricultural land leveling and soil moisture content treatment operation.

The application discloses a floating regulation type paddy field beating and land leveling machine, which comprises a suspension device, a frame, a floating device, a ground surface profiling device, a soil scraping plate and a lifting plate; the suspension device is hinged with the frame and connected with the frame through the ground surface profiling device; the soil scraping plate is movably connected with the frame through the floating device; and the lifting plate is connected to the bottom end of the frame. The earth carrying capacity is controlled by adjusting the length of the secondary oil cylinder; the operation and transportation states of the application are switched by adjusting the length of the primary oil cylinder; and the coupling effect among the suspension device, the floating device and the lifting plate reduces the influence of the hard bottom layer on the paddy field leveling operation.

1. The name of the design product: Land leveling tool. 2. The use of the design product: A tool for leveling land. 3. The design key points of the design product: Lies in the shape. 4. The picture or photo that best shows the design key points: Perspective view.

The invention provides adjustable automatic ditching equipment for land consolidation and an operation method thereof. The adjustable automatic ditching equipment for land consolidation comprises a ditching front-section support, a ditching assembly used for conducting ditching treatment on land, a soil separation detection assembly, a land leveling assembly used for conducting leveling action on the land subjected to ditching through the ditching assembly and a pre-soil-loosening assembly, the ditching assembly is installed at one end of the ditching front-section support, and the soil separation detection assembly is installed at the other end of the ditching front-section support. The soil separation detection assembly is installed at the end, away from the ditching front-section support, of the ditching assembly, the land leveling assembly is installed on the lower side of the ditching front-section support, and the pre-soil-loosening assembly is installed at the end, away from the ditching assembly, of the soil separation detection assembly. According to the adjustable automatic ditching equipment for land consolidation, through mutual cooperation of all the structures, pre-ground breaking can be conducted on hard land, the ditching efficiency of ditching is improved, simultaneous multi-angle ditching can be achieved, the application scene of ditching can be improved, and the adaptability of the adjustable automatic ditching equipment is improved.

The invention relates to the technical field of land renovation, in particular to an intelligent leveling device for land renovation, which comprises a vehicle body, a crawler mechanism for driving the vehicle body to advance is arranged on the vehicle body, a support arm is fixed on the vehicle body, a bucket for shoveling soil is hinged on the support arm, and a lifting oil cylinder is arranged between the vehicle body and the bucket. The two ends of the lifting oil cylinder are hinged to the vehicle body and the bucket respectively. A discharging port is formed in the bucket, a smashing roller used for smashing shoveled soil is rotationally installed on the bucket, and a conveying belt used for conveying the smashed shoveled soil is rotationally installed on the portion, located below the discharging port, of the vehicle body. According to the invention, a plurality of procedures such as soil shoveling, soil crushing, conveying, screening and compacting can be organically integrated into a set of continuous and automatic operation system, the undisturbed soil can be efficiently treated, and the efficiency, quality and automation degree of land leveling are obviously improved.

1. The name of the design product: excavator. 2. The use of the design product: used for earthwork excavation, loading, land leveling, crushing, demolition and other operations. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention discloses a paddy field intelligent land preparation machine with a fertilizer spreading structure, and belongs to the field of land preparation machines, the paddy field intelligent land preparation machine comprises side plates, the upper ends of the side plates are fixedly connected with a top plate, the upper end of the top plate is fixedly connected with a discharging hopper, the bottom of the discharging hopper extends to the lower end of the top plate, and a rotating rod is rotatably connected between the two side plates; the two ends of the rotating rod penetrate through the side plates and are fixedly connected with moving wheels, and a transmission and soil preparation assembly is arranged on the inner sides of the side plates. The core purpose of the fertilizer spreading device is to ensure that the fertilizer can be uniformly and accurately spread into the soil so as to promote the growth of crops, accurate regulation and spreading of the fertilizer are realized through the rotating roller, the material containing groove, the baffle plate, the partition plate and other components, and the fertilizer can be ensured to be uniformly spread in the whole working area through fine regulation and control. The fertilizer application efficiency is improved, fertilizer waste is avoided, and reasonable utilization of the fertilizer is ensured, so that healthy growth of crops is promoted.

The utility model discloses a split-flow type soil leveling and preparation machine which comprises a main support, a folding mechanism, a split-flow frame, a split-flow soil guide device, a soil crushing harrow blade, a soil crushing and leveling press frame and a supporting wheel, and an L-shaped supporting rod is rotationally connected to a square support; according to the utility model, the folding mechanism provides a turnover storage function for the side brackets and the supporting wheels, so that the equipment is convenient to store, and meanwhile, the shunting frames and the shunting soil guiders which are arranged in a staggered manner form a shunting type soil leveling structure, so that the soil leveling effect is improved; according to the whole equipment, the soil crushing, leveling and pressing frame, the shunting soil guide device and the soil crushing harrow blade are integrated and fixed through a frame structure formed by the side supports and the main support, soil can meet the seeding requirement through one-time treatment, damage to the soil caused by multiple sets of machines is reduced, and the working efficiency is improved; in the using process, the soil crushing harrow blades which are inclined by 10 degrees relative to the main support can crush soil blocks more effectively, meanwhile, the situation that the operation load of equipment is increased due to the too large inclination angle is avoided, and the oil consumption of soil preparation is reduced.

The invention relates to the technical field of land leveling engineering, in particular to a high-precision land leveling operation device based on Beidou positioning, which comprises a driving chassis, the top of the driving chassis is provided with a cockpit, and the top of the cockpit is provided with a laser radar. And cameras are installed at the positions, located on the two sides of the laser radar, of the top of the driving chassis, a Beidou satellite navigation device is installed at the top of the driving chassis, and a first mechanical arm and a second mechanical arm are installed on the outer side wall of the cockpit. The excavator bucket is responsible for excavating and transferring a large-area soil layer, the clamping jaw is responsible for accurately clamping stones and normalizing soil, and the excavator bucket and the clamping jaw cooperate with each other, so that the problem that a single operation mechanism cannot thoroughly treat terrain defects is solved, the land leveling quality is greatly improved, a special collection hopper is arranged, centralized collection and transferring of stones and muck are achieved, secondary scattering is avoided, and the subsequent cleaning cost is reduced. And the working environment is optimized.

The utility model discloses a land leveling device for land engineering, which belongs to the technical field of land leveling equipment and comprises a vehicle body, a spraying component and a flattening component, the spraying component is fixedly connected to the lower surface of the vehicle body, the flattening component is fixedly connected to the lower surface of the vehicle body, and the lower surface of the vehicle body is fixedly connected with a land scraping component. In order to improve the working efficiency of the floor scraping plate, the floor scraping assembly comprises the floor scraping plate, the side face of the floor scraping plate is fixedly connected with a cleaning motor, the output end of the cleaning motor is fixedly connected with a cleaning threaded rod, and the side face of the cleaning threaded rod is in threaded connection with a cleaning brush. A cleaning motor is used for driving a cleaning brush to move on the side face of a cleaning threaded rod, soil attached to and accumulated on the side face of a soil scraping plate can be scraped away, and therefore the land leveling efficiency is improved, a moving assembly is arranged on the lower surface of a vehicle body, a first transmission wheel is driven to rotate through a moving motor, and a rotating wheel is driven to rotate through conveying of a belt; and the device is driven to move, so that the labor intensity of workers is reduced.

The energy-saving land leveling shovel comprises a vehicle frame, walking wheels, a vehicle arm, a land leveling shovel plate and a side wing shovel plate, the multiple walking wheels are rotationally arranged on one side of the vehicle frame, the other side of the vehicle frame is rotationally hinged to the bottom of the rear side of the vehicle arm, and the land leveling shovel plate is rotationally connected to the bottom of the front side of the vehicle arm; side wing shovel plates are fixedly connected to the two sides of the land leveling shovel plate; the included angle alpha between the side wing shovel plate and the land leveling shovel plate is more than 90 degrees and less than 180 degrees; a first hydraulic cylinder is connected between the side wall of the vehicle arm and the upper portion of the land leveling shovel plate, and the two ends of the first hydraulic cylinder are rotationally hinged to the vehicle arm and the land leveling shovel plate respectively. The energy-saving land leveling shovel with the adjustable working face width has the beneficial effects that flexible adaptation of the working face width of 2-5 m is achieved, the workload and energy consumption are reduced, the economical efficiency is remarkably improved, the service life of equipment is prolonged, the working period is greatly shortened, and the working efficiency and the land leveling precision are remarkably improved.

The utility model relates to the technical field of land reclamation, and discloses a land leveler for land reclamation, which comprises a leveling plate, a plurality of leveling shovels are fixed at the bottom of the leveling plate at intervals, a slope plate is fixed on one side of the leveling plate, a lower plate is fixedly mounted above the leveling plate through bolts, an upper plate is arranged right above the lower plate, and the slope plate is fixed on one side of the leveling plate. A plurality of telescopic mechanisms are connected between the upper plate and the lower plate, a transverse plate is arranged on one side of the upper portion of the upper plate, and lifting mechanisms are connected between the two sides of the bottom of the transverse plate and the upper plate. The supporting rod is connected with the tractor, the tractor drives the device to move, land can be leveled through the leveling plate and the leveling shovel, and when stones appear, the slope plate can press the stones downwards, so that small stones can be leveled on the land.

The depth-adjustable land leveling device comprises a rack, a ploughing structure and a leveling structure, the rack comprises an installation frame, a hydraulic cylinder fixedly installed on the lower surface of the installation frame and a sliding frame fixedly installed at the telescopic end of the hydraulic cylinder, and an assembly frame capable of being connected with an external vehicle body is arranged on the surface of the installation frame. The ploughing structure comprises three spiral twisted blades rotationally mounted on the lower surface of the sliding frame at equal intervals, a plurality of soil turning nails fixedly mounted on the lower surface of the sliding frame at equal intervals, and a driving assembly arranged on the upper surface of the sliding frame and used for driving the spiral twisted blades to rotate, and the leveling structure comprises a mounting frame fixedly mounted on the left side face of the sliding frame. By arranging the ploughing structure and the leveling structure, compared with the prior art, the device can perform rotary tillage on soil through the ploughing structure, and then the soil subjected to rotary tillage can be leveled through the leveling structure, so that rotary tillage and leveling can be integrally completed, and the situation that the soil needs to be subjected to rotary tillage after the soil is leveled is avoided.

The utility model relates to the technical field of intertillage fertilization, in particular to a three-in-one type intertillage fertilization device which comprises a linkage top plate and a depth control wheel, an installation rod is detachably installed on the linkage top plate through a bolt, a plough shovel is arranged at the bottom of the installation rod, and the depth control wheel is connected with the installation rod through a linkage fork arm. An automatic adjusting telescopic rod is arranged on the surface of the linkage fork arm, a soil leveling plate is mounted at the lower end of the surface of the mounting rod, a fertilizing pipe is arranged between the soil leveling plate and the mounting rod, a capillary laying wheel is mounted on the side of the lower end of the soil leveling plate through a mounting plate, and a furrow opener is arranged on the side, located on the plough shovel, of the lower end of the mounting rod; according to the utility model, ploughing, fertilization and capillary laying are carried out together, the soil is turned up by the plough shovel, so that the soil can cover the bottom of a corn stalk, the soil covering effect on the root is improved, the drip irrigation pipe is positioned above the fertilizer, the fertilizer is infiltrated by water during irrigation, the fertilizer is convenient to dissolve and feed, and the fertilization effect is improved.

The utility model relates to the field of ridging and film mulching devices, in particular to a radix bupleuri ridging and film mulching device which comprises a vehicle body and a connecting frame, the outer surface of the vehicle body is rotatably connected with the connecting frame, a first connecting rod is fixedly connected to the inner wall of the vehicle body, and two connecting blocks are rotatably connected to the outer surface of the first connecting rod; a hydraulic rod is started to extend or contract, at the moment, the hydraulic rod can rotate around a first connecting rod and drive a connecting frame to rotate around a vehicle body, so that the direction is adjusted, and a double-shaft motor and meshing between a first bevel gear and a corresponding second bevel gear are started to drive two screw rods to rotate; the rotation of the screw rod can drive the corresponding connecting plate to vertically move along the screw rod, different numbers of ploughing pieces are inserted into the third connecting rod, and the clamping plate is used for limiting and fixing the ploughing pieces, so that the effects that the device is not only used for land leveling, but also suitable for forest land and slope land, and the ridging width and height can be adjusted are achieved.

The application discloses an auxiliary driving control method of a excavator, and belongs to the technical field of engineering machinery. The method solves the defects of the traditional excavator in the prior art, such as complex operation, fatigue of the handle after long-time operation, and poor operation effect of land leveling and slope repairing. The controller receives the voltage signal output by the sensor module in real time, converts the voltage signal into a displacement signal, and outputs the displacement signal to a display. The controller receives the auxiliary driving related parameters transmitted by the display, executes corresponding algorithms, calculates the current vehicle body posture of the excavator according to a mathematical model of the whole machine, obtains the required movement speed and movement direction of the swing arm, the bucket rod and the bucket according to a preset algorithm, and the required hydraulic oil flow. The controller converts the required movement speed and movement direction of the swing arm, the bucket rod and the bucket into a current signal and a digital signal, and outputs the current signal and the digital signal to a hydraulic system module and a power module. The controller receives the signal of an electric control handle to determine whether to start controlling the action of the excavator. The application is mainly used on the excavator and other engineering machinery.

The utility model relates to a width-adjustable land leveler, and belongs to the field of land leveling machinery. The fixed soil scraping shovel is arranged on the suspension frame; the two movable soil scraping shovels and the fixed soil scraping shovel are arranged in parallel; the driving mechanism is connected with the two movable soil scraping shovels and drives the two movable soil scraping shovels to move in the width direction of the fixed soil scraping shovel; according to the technical scheme, the one-time land leveling width of the land leveler can be adjusted, the land leveling efficiency can be improved, the width of the scraping shovel can be adaptively adjusted according to different land widths, and various application requirements are met.

1. The name of the designed product: land leveler (760). 2. The use of the designed product: land leveling, road finishing. 3. The design points of the designed product: the combination of shape and color. 4. The picture or photo that best shows the design points: perspective view 1. 5. The design includes color. 6. The bottom surface of the designed product is a part that is not easily visible or invisible during use, and the top view is omitted.