Rear valve type corn precision straight seeding and hole sowing device

Abstract

The invention relates to a hole sowing device used on a corn plastic film mulching hole sowing machine in the field of agricultural machinery and in particular relates to a rear valve type corn precision straight seeding and hole sowing device. The invention aims to provide a rear valve type corn precision straight seeding and hole sowing device which is simple in structure and reasonable in motion track of hole sowing device and has soil removal and blockage prevention performances. The rear valve type corn precision straight seeding and hole sowing device comprises a corn precision seed discharging device (9), a hole sowing transmission system (1), a hole sowing reciprocating device (2), a seed discharging valve control part (3), a rear seed discharging valve (4), an upper guide seat (5), a soil removal guide seat (6), a hole sowing device fixing rack (7) and a hole sowing transmission system support frame (8).

Description

technical field [0001] The invention relates to a hole sowing device used on a corn mulching hole planter in the field of agricultural machinery, in particular to a rear valve type corn precision direct insertion hole planting device. Background technique [0002] Corn mulching seeding is a technology of moisture conservation, drought resistance and rain collection, which can effectively prevent the growth of weeds. Film mulching seeders are widely used in arid and rainless areas in Northwest my country. During the process of corn precision sowing, a single seed per hole is guaranteed. In the film-covered seeder, the hole sowing device is indispensable, so the performance of the hole sowing device directly affects the performance of the film-covered seeder. [0003] Hole sowing is one of the important agronomic techniques to realize precision sowing, and the hole sowing device is the key component to realize the hole sowing technology. The widely used corn hole-sowing device...

AI Technical Summary

Problems solved by technology

The working principle of the hole sowing wheel type hole sowing device is that the hole sowing wheel directly contacts the surface of the mulch film for circular motion, and is installed on the hole sowing wheel circle with a certain angle between the hole sowing wheel and the duckbill type opener, which is realized while following the hole sowing wheel for circular motion. Punching action: the duckbill passive open-type hole sowing device, when the opening wing of the duckbill opener is in contact with the ground, the opener will be opened by the counter force of the ground to realize the seeding action. When this punching method works, The action of the duckbill mouth opener is greatly affected by the reaction force of the ground, and the tearing of the film is serious; the duckbill actively opens the hole sowing device. When the hole sowing wheel rotates, the movable duckbill opens to the designated sowing position according to the built-in cam mechanism. After the seeds fall, the movable duckbill is reset by the built-in spring force, but because the duckbill also rolls with the hole sowing wheel in the process of rolling and inserting seeds, it is easy to cause soil blockage; Complicated, the distance between plants cannot be adjusted

The in-line reciprocating hole seeding device mainly uses a crank linkage mechanism, a grooved wheel mechanism and a rack and pinion mechanism to realize the reciprocating motion of the hole seeder, wherein the crank slider mechanism can only approximate a given movement, and the mechanism is complicated; Intermittent movement can be realized, and the seeding efficiency is low; the rack and pinion mechanism has a severe impact on the reversing node of the reciprocating motion of the hole planter; and the existing in-line hole planting device rarely has a soil removal device outside the hole planter, which affects the penetration of the hole planter into the soil performance

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