The invention relates to an agricultural machine, namely a farmland plastic film residue recovering machine which comprises a machine frame (1), a soil shovel (4) and a screening mechanism. The farmland plastic film residue recovering machine is characterized in that the screening mechanism is a screening drum (7) fixed on the machine frame, an inlet (11) is arranged on the front side of the screening drum (7), an outlet (13) is arranged on the rear side, a screening plate (9) arranged horizontally is arranged on the lower portion in the drum, a rotary shaft (16) is arranged below the screening plate (9) and in transmission with a power machine, and a fan (10) is arranged above the screening plate (9). The farmland plastic film residue recovering machine has the advantage that due to the fact that plastic film residues and fragments are light, the plastic film residues can be separated from sundries under the attraction of wind and enter a container, and the problem that the plastic film residues and the sundries are hard to separate and fine plastic film residues are mixed into soil again after screening is solved. Mulching film recovery rate is more than 95%, an agricultural requirement is met, and the farmland plastic film residue recovering machine has the advantages of being simple in structure, low in cost, convenient to operate, reliable in performance and the like and can be a leading machine for recovering the plastic film residues hopefully.

Farmland plastic film residue recovering machine

The invention discloses an environment-friendly soil remediation device. The soil remediation device comprises a box body, the upper portion of the box body communicates with a feeding pipe, a spiralfeeding roller is arranged in the feeding pipe, the bottom of the spiral feeding roller is fixedly connected with a throwing disc, a hitting plate is arranged at the position, located on the outer side of the throwing disc, of the box body, a smashing screen cylinder is arranged below the throwing disc, a center shaft is arranged in the smashing screen cylinder, a smashing knife and a scraping plate are fixedly connected to the center shaft, an annular spraying pipe is arranged below the smashing screen cylinder, and nozzles which are circumferentially distributed are arranged on the annular spraying pipe. Through the throwing disc and the hitting plate, soil blocks are hit and smashed, and subsequent soil smashing is facilitated; through the smashing screen cylinder, the scraping plate and the smashing knife, the soil can be subjected to further smashing and screening, and the soil particle smashing effect is ensured; the annular spraying pipe and the atomizing nozzles are arranged, asoil repairing agent and falling soil particles can be sufficiently mixed, the mixing effect is improved, and the use amount of the repairing agent can be reduced.

Environment-friendly soil remediation device

The invention relates to agricultural harvest machines, in particular to a pepper and used plastic film separation device. The pepper and used plastic film separation device mainly comprises a separation chamber, wherein the separation chamber is provided with a pepper flow inlet, a used plastic film outlet, an air inlet and a pepper flow outlet; a conveyor mesh belt is arranged in the separation chamber; an unloader is connected to the position close to the pepper flow inlet; an air blocker is connected to the position close to the pepper flow outlet; the used plastic film outlet is connected with a cloth bag type dust collector through a used plastic film collection pipeline; the cloth bag type dust collector is connected with a cyclone device through a connection pipeline; the air blocker is located at the pepper flow outlet in the lower end of the separation chamber. The pepper and used plastic film separation device is simple in structure, economical, practical and capable of effectively separating a used plastic film from pepper.

Pepper and used plastic film separation device

The invention belongs to the technical field of agricultural machinery, and particularly discloses a soil tillage mechanical device, which comprises a vehicle body provided with walking wheels at thebottom, a soil shovel board is arranged at the front end of the vehicle body, and a collecting box is arranged at the tail end of the vehicle body; the vehicle body is provided with a sieve plate anda first driving mechanism, the sieve plate is inclined downwards in the direction of the collecting box, a plurality of first sieve holes are arranged on the sieve plate, a cutting piece is arranged in each first sieve hole, the cutting piece comprises a cutting rod and saw teeth arranged at the top end of the cutting rod, the saw teeth are inclined downwards, the two ends of the cutting piece runthrough the first sieve hole. The screen frame of the soil tillage mechanical device is not easily blocked, and has a long time better screening capability for the soil.

Soil tillage mechanical device

The invention discloses a residue films conveying device of a field-clearing machine, which comprises a front support saddle, a back support saddle and a working groove arranged sideling and hinged on the front and back support saddle. The underside of the working groove consists of circular screens. A screed bracket is arranged above the working groove and is parallel to the working groove, the front and the back parts of which are respectively hinged with suspenders, the upper ends of which are respectively hinged on a machine frame. The top surface of the lower end of the screed bracket is provided with an upper connection base connected with a power input rod. The underside of the screed bracket is hinged with the screeds at intervals from front to back. The plane of the screed is vertical to that of the screed bracket. The included angle between the screed and the screed bracket is a right angle or an acute angle. The lower part of the screed is located in the working groove. The width of the screed matches with that of the working groove. The invention not only can effectively separate the residue films and residues without returning the residue films and residues with high work efficiency and simple structure, but also breaks the soil.

Residual film conveying device of field cleaning and soil preparing machine

In this paper the mechanical analysis of the film picking forks roller tooth in field -cleaning machine was done. A finite element analysis model was built and used by the non-linear finite element analysis method. It is obtained from the result of post-processing calculation and analysis that according to the Fourth Strength Theory, the maximum equivalent stress on the pole tooth root under the uniform load. Root strength should be strengthened to ensure the evenly stress overall the pole tooth, because pole tooth root department would be deformed easily. And the largest stress is at the end of pole tooth and decreases gradually from end to root, and deformation is also the same. Based on the analysis of strength and rigidity, the bearing forces and deformation of the film picking forks roller tooth in work were predicted and validated. It was found that the finite element analysis and the result of test were well coincided. The reliable tool was provided for the design of the film picking forks roller tooth by the finite element analysis. The Roller tooth was designed and improved according to the requirement of deformation and operation.

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Shaohui Ma

Papers

Residual film conveying device of field cleaning and soil preparing machine

Finite Element Analysis and Design Improvement of Film Picking Forks Roller Tooth in Field Cleaning Machine