CN-121970598-A - Corn harvester header alignment mechanism

CN121970598ACN 121970598 ACN121970598 ACN 121970598ACN-121970598-A

Abstract

The invention discloses a corn harvester header alignment mechanism, which is characterized in that a snapping roll plate is horizontally slidably arranged on a horizontal track, an alignment debugging assembly comprises a driving mechanism, a left visual sensor and a right visual sensor, wherein the left visual sensor and the right visual sensor are respectively arranged at the two sides of a feeding channel at the front part of the snapping roll plate, the driving mechanism is arranged at the rear part of the snapping roll plate and is used for driving the snapping roll plate to carry out horizontal position adjustment on the horizontal track, when the corn harvester header alignment mechanism is used, the left visual sensor and the right visual sensor detect whether corn stalks exist in front, when the left visual sensor or the right visual sensor detect corn stalks exist in front of the corn header, the left visual sensor or the right visual sensor feed back the snapping roll plate to work until the left visual sensor or the right visual sensor can not detect the corn stalks after the feeding channel is opposite to the corn stalks, and then the driving mechanism is stopped. The invention ensures the stability of stalk cutting and ear harvesting by adjusting the corresponding input of the stalk and the feeding channel.

Inventors

TIAN KUNPENG
ZHANG BIN
HUANG JICHENG
MU SENLIN
KONG FANTING
MOU ZHONGQIU

Assignees

农业农村部南京农业机械化研究所

Dates

Publication Date: 20260505
Application Date: 20260320

Claims (10)

1. A corn harvester header alignment mechanism comprises a snapping roll plate (1), wherein a feed channel (11) for allowing stalks to enter is formed in the middle of the snapping roll plate (1), cutting rolls (12) for cutting the stalks are arranged on two sides of the feed channel (11) below the snapping roll plate (1), the stalks are dragged downwards by a pair of cutting rolls (12) in the process of entering the feed channel (11) and continuously cutting the stalks in the process of advancing to an output end, the ears on the stalks are blocked and output to the output end when falling to the snapping roll plate (1), the corn harvester header alignment mechanism is characterized in that the snapping roll plate (1) is horizontally slidable on a horizontal track (4), the corn harvester alignment mechanism also comprises an alignment assembly (5), the alignment assembly (5) comprises a driving mechanism (51), a left vision sensor (52) and a right vision sensor (53), the left vision sensor (52) and the right vision sensor (53) are respectively arranged on two sides of the feed channel (11) at the front of the snapping roll plate (1), and the left vision sensor (52) and the right vision sensor (53) are respectively arranged on the front of the snapping roll plate (1) when the snapping roll plate (1) is horizontally moved to the horizontal track (4) to detect whether the position of the corn harvester is horizontally, when the left vision sensor (52) or the right vision sensor (53) detects that cornstalks exist in front of the cornstalks, the feedback signal is used for signaling the driving mechanism (51) to work to move the snapping roll plate (1) left or right until the feeding channel (11) is opposite to the cornstalks and the left vision sensor (52) or the right vision sensor (53) can not detect the cornstalks, and then the driving mechanism (51) is stopped.
2. The corn harvester header alignment mechanism of claim 1, wherein the corn harvester header alignment mechanism comprises the following steps: s1, driving equipment to travel to planted corns, and detecting whether corns stems exist in front by a left vision sensor (52) and a right vision sensor (53); s2, when a left vision sensor (52) or a right vision sensor (53) detects that corn stalks exist in front of the corn stalks, a feedback signal command driving mechanism (51) works to move left or right to pick the snapping roll plate (1); S3, after the snapping roll plate (1) moves to the position that the feeding channel (11) is opposite to the cornstalk, the left vision sensor (52) or the right vision sensor (53) can not detect the cornstalk, and then the driving mechanism (51) is stopped by feeding back signals; And S4, enabling the corn stalks to directly enter the feeding channel (11) along with the continuous advancing.
3. The corn harvester cutting table alignment mechanism according to claim 2, wherein the driving mechanism (51) comprises a driving motor (511), a driving gear (512) and a driving rack (513), the driving rack (513) is horizontally arranged on the snapping roll plate (1), the driving motor (511) is connected with the driving gear (512), the driving gear (512) is in meshed transmission with the driving rack (513), and when the driving motor (511) is started, the driving gear rotates forward or reversely to drive the snapping roll plate (1) to move left or right.
4. The corn harvester cutting table alignment mechanism according to claim 3, wherein the snapping roll plates (1) are arranged in a plurality of groups on the horizontal track (4) at intervals, and the snapping roll plates (1) are horizontally aligned by respective alignment adjustment assemblies (5).
5. The corn harvester cutting table alignment mechanism according to claim 2,3 or 4, further comprising a telescopic cutting assembly (2), wherein the telescopic cutting assembly (2) comprises a cutting knife (21), a first force sensor (22) and a second force sensor (23), the snapping roll plate (1) comprises an upper plate body (101) and a lower plate body (102) which are arranged in an up-down arrangement, the upper plate body (101) is provided with a plurality of first force sensors (22) at two sides of the feeding channel (11) at an upward interval along the conveying direction, the lower plate body (102) is provided with a plurality of second force sensors (23) at two sides of the feeding channel (11) along the conveying direction towards the feeding channel (11), the positions of the first force sensors (22) and the second force sensors (23) are in one-to-one correspondence, the cutting knife (21) is arranged between the upper plate body (101) and the cutting roll (12) in pairs and can stretch towards the feeding channel (11), the stalks touch the feeding channel (11), the second force sensors touch the feeding channel (11) at the output ends of the feeding channel (11) and the second force sensors (23) reach a first force sensor (23) and reach a second force sensor (23) value when the second force sensor (23) is detected by the second force sensor reaches a preset value, the feedback signal drives the cutting knife (21) to move to the feeding channel (11) once so as to cut the ear stalks and the stalks.
6. The corn harvester header alignment mechanism of claim 5, wherein: the application method of the corn harvester header alignment mechanism further comprises the following steps: S5, cutting off cornstalks by a rotary cutting roller (12) and dragging the cornstalks downwards to continuously cut the cornstalks; s6, determining the position of the stalk by detecting a force value by a second force sensor (23) on the touch side of the stalk; s7, when the first force sensor (22) above the second force sensor (23) detects the force value and the force value exceeds a preset value, determining that the corn ears collide with the first force sensor (22), and driving the cutting knife (21) to perform one-time displacement to the feeding channel (11) by a feedback signal so as to cut the ear handles and stalks; S8, the cut clusters are supported by the upper plate body (101) and output to an output end.
7. A corn harvester header alignment mechanism as in claim 6 wherein the cutter (21) is located between the upper plate (101) and the lower plate (102).
8. The corn harvester cutting table alignment mechanism according to claim 6, wherein the cutting knife (21) is driven to move through the telescopic power mechanism (3), the telescopic power mechanism (3) comprises an air cylinder (31), a linkage gear group (32) and an inclined pushing block (33), the air cylinder (31) is arranged in a front-back direction, an air cylinder shaft of the air cylinder (31), the linkage gear group (32) and the inclined pushing block (33) are sequentially connected, the air cylinder (31) drives the inclined pushing block (33) to move back and forth when in reciprocating motion, a pushing roller (211) matched with the inclined pushing block (33) is arranged at the rear portion of the cutting knife (21), the inclined surface of the inclined pushing block (33) pushes the pushing roller (211) towards the feeding channel (11), an elastic piece (212) is further connected to the cutting knife (21), the elastic piece (212) deforms and stores force when the cutting knife (21) is pushed out, and when the inclined pushing block (33) is reset, the cutting knife (21) is quickly reset by the elastic piece (212).
9. The corn harvester cutting table alignment mechanism according to claim 8, wherein the linkage gear set (32) comprises a first rack (321), a gear (322) and a second rack (323), the first rack (321) and the second rack (323) are arranged in parallel and are in meshed transmission through the gear (322), the first rack (321) is connected to a cylinder shaft of the cylinder (31), and the second rack (323) is provided with an inclined pushing block (33).
10. The corn harvester cutting table alignment mechanism according to claim 9, wherein the inclined pushing blocks (33) are arranged in front of and behind the second racks (323), the elastic pieces (212) are arranged in front of and behind the cutting knife (21), and rails or sliding grooves are arranged on two sides of the cutting knife (21) for reciprocating sliding fit.

Description

Corn harvester header alignment mechanism Technical Field The invention relates to agricultural machinery equipment, in particular to a corn harvester header alignment mechanism. Background The cutting and cutting structure adopted by the existing corn harvester comprises a plurality of ear picking units which are arranged in parallel, the row spacing of each ear picking unit is fixed, the operation adaptability is limited under the condition of different corn planting row spacing, the ear picking units can guide corn stalks by virtue of a guide opening at the front part, but the inclined corn stalks can influence the stable conveying, the cutting of the stalks and the picking and collecting of the ears at the later stage. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a corn harvester cutting table alignment mechanism, which detects the position of cornstalks through a visual sensor at the front part, and then adjusts the position of a snapping roll plate to finish the correspondence of the cornstalks with a feeding channel. The corn harvester cutting table alignment mechanism comprises a snapping roll plate, a alignment adjustment assembly, a left visual sensor and a right visual sensor, wherein a feeding channel for the stalks to enter is formed in the middle of the snapping roll plate, cutting rolls for cutting the stalks are arranged on two sides of the feeding channel below the snapping roll plate, the stalks are dragged downwards by the pair of cutting rolls and continuously cut in the process of entering the feeding channel and advancing towards an output end in a rotating mode, ears on the stalks are blocked and output towards the output end when falling to reach the snapping roll plate, the snapping roll plate can horizontally slide and is arranged on a horizontal track, the alignment adjustment assembly comprises a driving mechanism, the left visual sensor and the right visual sensor are respectively arranged on two sides of the feeding channel, the driving mechanism is arranged behind the snapping roll plate and used for driving the snapping roll plate to perform horizontal position adjustment on the horizontal track, when the corn harvester is used, whether the left visual sensor and the right visual sensor are used for detecting whether the stalks are in front of the corn harvester or not, and when the corn harvester is in front of the left or right corn harvester is in front of the corn harvester, the left or right corn harvester is driven by the corn harvester, and the corn harvester is not in front of the corn harvester. As an improvement, the method for using the corn harvester header alignment mechanism comprises the following steps: S1, driving equipment to travel to planted corns, and detecting whether corns stems exist in front by a left vision sensor and a right vision sensor; s2, when the left visual sensor or the right visual sensor detects that corn stalks exist in front of the corn stalks, the feedback signal instructs the driving mechanism to work to move left or right to pick the snapping roll plate; S3, after the snapping roll plate moves to the position that the feeding channel is opposite to the cornstalk, the left vision sensor or the right vision sensor can not detect the cornstalk, and then a feedback signal stops the driving mechanism; And S4, enabling the corn stalks to directly enter the feeding channel along with the continuous advancing. As an improvement, the driving mechanism comprises a driving motor, a driving gear and a driving rack, wherein the driving rack is horizontally arranged on the snapping roll plate, the driving motor is connected with the driving gear, the driving gear is in meshed transmission with the driving rack, and when the driving motor is started, the driving gear rotates forward or reversely so as to drive the snapping roll plate to move left or right. As an improvement, the snapping roll plates are arranged in a plurality of groups at intervals on the horizontal track, and the snapping roll plates are horizontally adjusted through respective opposite adjustment assemblies. The improved snapping roll plate comprises a cutting knife, a first force sensor and a second force sensor, wherein the cutting knife, the first force sensor and the second force sensor are arranged up and down, the snapping roll plate comprises an upper plate body and a lower plate body which are arranged up and down, the upper plate body is provided with a plurality of first force sensors at intervals along the conveying direction on two sides of a feeding channel, the lower plate body is provided with a plurality of second force sensors at intervals along the conveying direction towards the feeding channel on two sides of the feeding channel, the positions of the first force sensors and the positions of the second force sensors are in one-to-one correspondence, the cutting knife is arranged between the upper plate body and t