Combine harvester cleaning control and cleaning method

Patent metadata

Field	Value
Publication number	US-10143135-B2
Application number	US-201515544845-A
Country	US
Kind code	B2
Filing date	Mar 17, 2015
Priority date	Mar 4, 2015
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

A combine harvester self-adaptive cleaning control apparatus, includes a return plate, a cleaning sieve, a cleaning centrifugal blower, an impurity collection and stirring auger, a grain collection and stirring auger, a cleaning grain loss monitoring sensor, a grain tank grain impurity rate automatic monitoring apparatus, and an on-line monitoring and control system. The on-line monitoring and control system is connected to the cleaning centrifugal blower, the cleaning grain loss monitoring sensor, the grain tank grain impurity rate automatic monitoring apparatus, and a power driving mechanism of a louver sieve having an adjustable opening. Also disclosed is a self-adaptive cleaning method of the cleaning apparatus which can automatically adjust various working parameters according to a working quality of a working process, control failure rate, and improve a down-time working time for the apparatus.

First claim

The invention claimed is:

1. A combine harvester comprising:
a sieve;
a collecting auger,
a grain auger;
a grain cleaning system;
a grain hopper;
a grain loss monitoring sensor;
a centrifugal fan; and
a grain impurity ratio monitoring device, wherein:
the grain loss monitoring sensor, an outlet plate and the collecting auger are located at a tail of the sieve;
the sieve includes an adjustable tail, and comprises an upper jitter plate, a lower jitter plate, an upper vibrating screen, and a lower vibrating screen including a lower vibrating screen diving motor, wherein the upper jitter plate is located on the upper vibrating screen, and the sieve includes a serrated tail which is located on a tail of the upper vibrating screen;
a power drive mechanism for the sieve adjustable tail is located at the tail of sieve;
a lower shaker driving motor is connected to drive the sieve; and a lower vibrating screen drive shaft is connected to the lower vibrating screen driving motor, wherein:
the combine harvester further comprises an on-line monitoring and control system, wherein an input of the on-line monitoring and control system, the grain loss monitoring sensor, and the lower vibrating screen driving motor, and an output of the on-line monitoring and control system is connected to the power drive mechanism for controlling the sieve adjustable tail, and to the centrifugal fan for controlling a degree of opening of the sieve adjustable tail and an air intake and an outlet direction of the centrifugal fan.

2. The combine harvester of claim 1 , wherein the sieve adjustable tail includes an opening adjusting mechanism which comprises a first connecting rod, a direction changing element, a second link, a connecting plate, a direct current electric cylinder, a linear displacement sensor, a support plate, a first connecting pin, a supporting shaft, and a second connecting pin, wherein
the support plate is mounted on a side plate below the sieve serrated tail;
the support shaft has one end fixed to one side of the support plate;
a direction switch is fixed to one side of the support plate by fasteners at one end of the support shaft on the side plate below a zigzag tail curtain;
a direction switch is connected to the first link through the first connecting pin;
the direction changing element is connected to the first connecting rod which in turn is connected to one end of the second link through the second connecting pin;
the other end of the second link is mounted with a rod end bearing;
wherein the connecting pin connects the rod end bearing of the second link to a rod end bearing on the extension shaft of a DC electric cylinder;
a DC electric cylinder is mounted on a support which in turn is mounted on an inside of the DC motor cylinder on the support plate, parallel to the DC motor cylinder, and an output shaft of a displacement sensor;
the output shaft of the displacement sensor is connected with an output shaft of the DC electric cylinder through the connecting plate;
the rectangular plate is welded at a lower edge of the adjustable tail sieve;
the first link passes through the tail sieve of the sieve and is connected to the rectangular hole beneath the adjustable tail sieve by fasteners; and
the DC electric cylinder is connected with the on-line monitoring and control system through a signal line, wherein the on-line monitoring and control system controls a driving direction by controlling movement of the DC electric cylinder and movement of the first connecting rod to adjust the opening of the sieve adjustable tail.

3. The combine harvester of claim 1 , wherein the centrifugal fan comprises:
a fan inlet opening adjustment mechanism;
a fan blade drive;
a lower outlet;
a first sub-wind plate and a first angle adjusting mechanism; and
a second sub-wind plate and a second angle adjusting mechanism; wherein
an upper outlet is on an upper part of the upper vibrating screen, the lower outlet is comprised of the first sub-wind plate and the first angle adjusting mechanism, and the second sub-wind plate;
the first sub-wind plate and the first angle adjusting mechanism pass through a center of the upper vibrating screen;
the second sub-wind plate and the second angle adjusting mechanism extend in an imaginary line intersecting the tail of the lower vibrating screen, the fan inlet opening adjusting mechanism, and the fan blade drive mechanism; and
the angle adjustment mechanism and the second angle adjustment mechanism are connected to the output of the on-line monitoring and control system, respectively.

4. The combine harvester of claim 3 , wherein the fan comprises a hydraulic motor, a hydraulic motor mounting plate, fan blades, a fan shaft and a bearing seat;
the fan blades are uniformly mounted on the fan shaft;
the fan shaft is mounted on the frame through the bearing seat;
the hydraulic motor mounting plate is bolted to the frame, and to the hydraulic motor; wherein a center line of the output shaft of the hydraulic motor coincides with a center line of the fan shaft, and
the signal line of the hydraulic motor is connected with the on-line monitoring and control system.

5. The combine harvester of claim 3 , wherein the fan inlet opening adjustment mechanism comprises a DC electric push rod; and a half-moon shield plate hanging an upper connecting hole; and a lower connecting hole;
a DC electric push rod is mounted on a side wall of the upper outlet;
the half-moon shield plate connects the DC electric push rod though the upper connecting hole and also connects an outer wall of the blower outlet of the fan through the lower connecting hole; and
the DC electric push rod is connected to the on-line monitoring and control system via a signal line; and movement of the shaft is controlled by controlling movement of the DC electric push rod through the half-moon shield plate upper connecting hole rotation to control fan air inlet air volume.

6. The combine harvester of claim 5 , wherein the first angle adjusting mechanism comprises a first lifting ear; a stepping motor; a rotating rod; a first sub-fan; a chute; a second hanging ear; and a stepping motor support frame;
wherein the stepping motor is mounted on the wall by a stepping motor support frame, and one end of a rotary lever; wherein the first lifting lug is fixed to the output shaft of the stepping motor, and the crankshaft and the other end of the rotary rod are connected to the second hanging ear via a circular slide rail, and the stepping motor;
wherein the line is connected to the on-line monitoring and control system; and
the stepping motor produces forward or reverse rotation under control of the on-line monitoring and control system thereby driving the first sub-wind plate to achieve adjustment of an angle of the first wind plate.

7. The combine harvester of claim 5 , wherein the second angle adjusting mechanism comprises a first lifting ear; a stepping motor; a rotating plate; first and second chutes; a second lifting lug; a stepping motor support frame; and a wind turbine;
wherein the stepping motor is mounted on the wall by a stepping motor support frame, and one end of the rotary lever is fixed to the output shaft of the stepping motor; and the other end of the slide bar and the rotary lever is connected to the second lifting lug via a circular guide, and the stepping motor; and
wherein the line is connected to the on-line monitoring and control system and the stepping motor produces forward or reverse rotation under control of the on-line monitoring and control system thereby driving the second sub-wind plate to adjust an angle of the second wind plate.

8. The combine harvester of claim 1 , wherein the grain impurity ratio monitoring device compr

Assignees

• Univ Jiangsu

Inventors

• Xu Lizhang
• Li Yaoming
• Liang Zhenwei
• Tang Zhong

Classifications

• A01F12/448

  Sieve adjusting means · CPC title

• A01D41/1276 Primary

  for cleaning mechanisms · CPC title

• H04N25/71

  Charge-coupled device [CCD] sensors; Charge-transfer registers specially adapted for CCD sensors · CPC title

• A01D41/1277

  for measuring grain quality · CPC title

• A01F12/56

  Driving mechanisms for the threshing parts · CPC title