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Research draft

combine harvester

vr.tr.combine-harvester · PHY.OBJ

Enable an AI agent to recognise a combine harvester, assess its crop compatibility and operating condition, and determine which harvesting, adjustment, transport or maintenance actions are appropriate.

Thing Registry Physical world and living systems

Research draft, second pass

A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.

recalled by Codex without web access - no source was read

Researched by: Codex

Purpose and description

Enable an AI agent to recognise a combine harvester, assess its crop compatibility and operating condition, and determine which harvesting, adjustment, transport or maintenance actions are appropriate.

A combine harvester is an agricultural machine that integrates crop gathering, threshing, separation and cleaning to recover grain or seed while discharging or collecting crop residues.

It can be Assess whether a documented crop and header configuration is compatible with the combine.; Compare harvesting performance using crop conditions and explicitly defined measurement bases.; Trace grain loss, damage or contamination to candidate intake, threshing, separation or cleaning causes.; Propose setting changes within verified operating instructions and evaluate their measured effects.; Plan unloading, residue treatment and travel using the installed configuration and current state.; Determine whether harvesting, inspection or service prerequisites are satisfied, identifying missing evidence..

Distinguishing features

Integrates threshing, separation and cleaning after crop intake; a mower or windrower primarily cuts and lays down crop.

Produces a separated grain or seed stream; a forage harvester primarily produces chopped crop material.

Processes harvested crop through an integrated harvesting machine; a standalone thresher does not by itself establish combine identity.

May collect standing crop or previously cut windrows through a compatible intake configuration; the presence of a cutting header alone is insufficient for identification.

Can be self-propelled or externally powered and towed; self-propulsion is not the defining test.

Scope

+ Compatibility between crop, header, feeder and processing configuration

+ Integrated threshing, separation and grain-cleaning functions

+ Clean-grain collection, unloading and crop-residue discharge

+ Power, field mobility, operating controls and machine states

+ Harvest performance, wear, blockages and service readiness

+ Combine-specific hazards and prerequisites for authorised actions

- Crop biology, cultivation plans and harvest scheduling as independent models

- Headers and other detachable implements as independently catalogued equipment

- Grain carts, transport trucks, grain dryers and storage facilities

- Manufacturer organisations, commercial product lines and sales offers

- Individual machine ownership, service events and operator qualifications as independent records

Characteristics

Crop and intake compatibility
Crop and condition linked to header, feeder and required conversion equipment Determines whether the installed configuration can collect and process the intended crop.
Header working width
m; row count and row spacing in mm where applicable Constrains field coverage, row matching and transport arrangements.
Threshing and separation architecture
Documented arrangement of cylinders, concaves, rotors, walkers and supplementary separators Determines the relevant adjustments, wear checks and crop-flow diagnosis.
Processing settings
Threshing-element speed in rpm, concave clearance in mm, fan speed in rpm and sieve opening in mm, with measurement locations Supports reproducible adjustment against grain damage, incomplete threshing and losses.
Harvest throughput
t/h, identifying clean grain or total crop material, crop moisture and test conditions Prevents comparison of capacities measured on incompatible bases.
Grain loss and sample quality
Loss in kg/ha or % with denominator; damaged grain and foreign material in % with sampling method Separates output quantity from recovered-grain quality and locates adjustment needs.
Grain collection and unloading
Tank capacity in L or m³ where fitted; unloading rate in L/s or kg/s with material basis Supports unloading coordination and avoids treating volume as a fixed grain mass.
Residue treatment
Installed straw and chaff routing, chopping, spreading or windrowing arrangements Determines compatibility with residue collection and subsequent field operations.
Power and drive configuration
Self-propelled or towed; onboard or external power; documented traction and processing drives Determines operating dependencies and energy-isolation requirements.
Travel envelope and ground loading
Width, height and length in m; operating mass and axle loads in kg; tyre or track configuration Supports access, soil-bearing and transport assessments for the actual configuration.
Operating and protection state
Travel mode, processing engagement, unloading engagement, alarms and verified guard or interlock status Determines which commands or physical interventions may be considered.
Processing-path service condition
Component-specific wear, blockage, leakage, damage, contamination and inspection status Connects deterioration to harvesting performance and readiness.

Also called

JF-MS70plot combine harvesterClaas LexionClaas SelbstfahrerClaas MedionClaas Europarice harvesterJohn Deere T660Claas Lexion 480

Where this came from

wikidata · CC0 1.0

Drafted structure

Bundle to layer to finding to question, as the second pass will find it: 7 bundles · 13 layers · 21 findings · 33 questions.

Crop intake and feed How the combine gathers the intended crop and delivers it into the processing system.

A combine's usable crop range depends on its intake configuration and feed behaviour, not merely its machine designation.

Crop and header fit

Compatibility among crop presentation, collection mechanism and machine interface.

Supported intake configuration

Record whether standing crop or windrow pickup is supported by the installed header, interfaces and conversion equipment.

  1. Which crop, row arrangement and standing or windrowed condition must this configuration handle? boundary
  2. Which documentation establishes compatibility of the header, feeder interface and required crop-conversion parts? provenance

Feed continuity

Movement of gathered crop through the header and feeder without excessive loss or obstruction.

Intake loss and loading

Distinguish crop lost at collection from uneven feeding, feeder overload and downstream processing limitations.

  1. What measurements distinguish pre-existing field loss from loss caused by the header? measurement
  2. Which observed feed symptoms justify changing travel speed or intake settings within documented limits? action
Grain recovery and quality Threshing, separation and cleaning as distinct contributors to recovered-grain quantity and quality.

Similar poor-output symptoms can require different adjustments depending on where grain remains attached, escapes or becomes damaged.

Threshing and separation

Release of grain or seed and its separation from the remaining crop material.

Processing architecture and settings

Identify the actual threshing and separation elements and relate their settings to crop condition and observed output.

  1. Which components perform threshing and separation, and which settings can the operator adjust? definition
  2. What sampling distinguishes unthreshed grain, separated grain lost with residue and processing damage? measurement

Cleaning and return flow

Cleaning-shoe performance and the routing of material that requires further processing.

Clean sample and loss balance

Assess cleaning settings against foreign material, grain carried out with chaff and tailings load where a return system is fitted.

  1. How are clean-grain contamination, cleaning loss and tailings quantity measured for this crop? measurement
  2. Which documented adjustment should be evaluated first when sample cleanliness improves but grain loss increases? action
Grain and residue discharge Handling of the separated grain stream and the straw and chaff streams leaving the combine.

Harvest continuity and field outcomes depend on both grain transfer and residue placement.

Grain collection and transfer

Installed grain holding, conveying and unloading arrangements.

Unloading compatibility

Record collection capacity, unloading geometry and the conditions required to transfer grain to a receiving vehicle or container.

  1. What are the usable collection volume, unloading rate and discharge reach, with their measurement conditions? measurement
  2. Does the receiving arrangement satisfy documented clearance and operating requirements for stationary or moving unloading? action

Straw and chaff routing

Configuration of residue discharge for collection or field distribution.

Residue output fit

Relate installed choppers, spreaders and bypass arrangements to the intended straw and chaff outcome.

  1. Which residue streams are chopped, spread or placed in a windrow in the current configuration? definition
  2. How will spread width and uniformity or windrow suitability be checked against the following field operation? measurement
Power, mobility and control How power, travel configuration and control states govern harvesting and movement.

A combine changes its operating envelope with header position, grain load, terrain and engagement of processing systems.

Field and transport envelope

Power dependencies and physical configuration during field travel and transport.

Configuration-dependent mobility

Record the power arrangement and travel envelope for the actual header, grain load and running gear.

  1. Which onboard or external power sources drive traction and crop processing? definition
  2. What dimensions, axle loads and documented terrain limits apply to the proposed travel configuration? measurement

Operator and automatic control

Command authority, operating modes and evidence supporting sensor-guided adjustments.

Control state and feedback

Distinguish commanded settings, actual engagement and measured feedback, including calibration status where monitoring or automation is installed.

  1. Which harvesting functions are manually controlled, automatically adjusted or unavailable in the current mode? definition
  2. What calibration and field checks support the yield, moisture or loss indications being used for decisions? provenance
Wear, blockage and service Condition of the crop-processing path and the work needed to restore harvesting readiness.

Wear and obstructed crop flow can degrade recovery before they cause an obvious machine stoppage.

Processing component condition

Inspection of crop-contact parts and their conveying and drive systems.

Wear linked to performance

Connect observed condition of cutting parts, threshing surfaces, concaves, sieves and conveyors to symptoms and documented service criteria.

  1. Which inspected wear, clearance or damage measurements exceed the applicable service criteria? measurement
  2. What evidence separates worn or damaged components from unsuitable crop settings as the cause of poor performance? provenance

Service and cleanout readiness

Required servicing and removal of retained crop material between operations.

Service and crop carryover

Track due servicing and retained grain or residue that could obstruct operation or contaminate the next crop lot.

  1. Which lubrication, filter, belt, chain and other service tasks are due under the applicable operating conditions? action
  2. Which retention points require inspection and cleanout before changing crop or grain lot? action
Harvest safety and action limits Evidence required before operating, approaching or intervening in combine mechanisms.

Crop intake, stored energy, elevated equipment and combustible residue create action-specific hazards that an operating-state label alone cannot resolve.

Access and energy isolation

Protection against moving mechanisms, unexpected restart and unsupported raised equipment.

Intervention prerequisites

Require verified machine-specific isolation and support conditions before blockage removal, inspection or service.

  1. Which power sources, residual motion and hydraulic or gravitational loads must be controlled for the proposed intervention? boundary
  2. What documented procedure and observed guard, interlock or support condition establish that access is permitted? action

Fire and operating restrictions

Harvest-related ignition conditions and requirements tied to machine configuration and jurisdiction.

Evidence for operating permission

Record residue accumulation, leaks, overheating indications and the verified requirements that constrain continued harvesting or transport.

  1. Which observed residue buildup, fluid leak or overheating indication requires stopping under the applicable instructions? action
  2. Which issuing bodies, standards, conformity records and local operating rules apply to this machine's age, configuration and jurisdiction? provenance
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.

A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.

Reported evidence

Findings from the breadth pass, kept separate from the structural claims.

Check these first

Recalled without web access and unsourced; every item is a lead to verify.

  • This describes the machine kind, not a manufacturer model or individual unit; the listed kinds overlap across propulsion and threshing-system classifications.
  • Measurement ranges are approximate recall-based examples for full-size machines, not category limits; compact machines and the largest models fall outside them.
  • Verify applicable standard editions, local machinery rules, road requirements and engine-emission requirements for the intended jurisdiction and production year.
  1. Which of these check these first hold for the sense of combine harvester this model covers, and on what evidence? provenance

Kinds and varieties

Recalled without web access and unsourced; every item is a lead to verify.

  • Self-propelled combines
  • Tractor-powered, pull-type combines
  • Conventional cylinder-and-straw-walker combines
  • Axial-flow rotary combines
  • Hybrid combines with tangential threshing and rotary separation
  1. Which of these kinds and varieties hold for the sense of combine harvester this model covers, and on what evidence? provenance

Identifiers and schemes

Recalled without web access and unsourced; every item is a lead to verify.

  • Manufacturer model designation - Manufacturer-specific series and model code - Identifies a product model rather than the general machine kind or an individual unit.
  • Manufacturer serial number or product identification number - Manufacturer-specific alphanumeric identifier - Identifies an individual machine; format and location vary by manufacturer.
  1. Which of these identifiers and schemes hold for the sense of combine harvester this model covers, and on what evidence? provenance

Standards and regulation

Recalled without web access and unsourced; every item is a lead to verify.

  • ISO 4254-1, issued by ISO: general safety requirements for agricultural machinery.
  • ISO 4254-7, issued by ISO: safety requirements for combine harvesters, forage harvesters, cotton harvesters and sugar cane harvesters.
  • ISO 3767 series, issued by ISO: symbols for operator controls and displays on tractors and agricultural machinery.
  1. Which of these standards and regulation hold for the sense of combine harvester this model covers, and on what evidence? provenance

Real-world use

Recalled without web access and unsourced; every item is a lead to verify.

  • Harvesting wheat, barley, oats and other cereal grains.
  • Harvesting maize for grain using a suitable corn header.
  • Harvesting soybeans, pulses and oilseeds with crop-specific attachments and settings.
  • Harvesting rice, including with machines adapted to soft or wet ground.
  • Picking up previously cut windrows for threshing and grain recovery.
  1. Which of these real-world use hold for the sense of combine harvester this model covers, and on what evidence? provenance

Typical measurements

Recalled without web access and unsourced; every item is a lead to verify.

  • Engine rated power of many modern full-size self-propelled combines - 150-500 - kW
  • Cereal cutting-header working width on many full-size machines - 4-14 - m
  • Grain-tank volume on many full-size machines - 5000-15000 - L
  1. Which of these typical measurements hold for the sense of combine harvester this model covers, and on what evidence? provenance

Failure modes and hazards

Recalled without web access and unsourced; every item is a lead to verify.

  • Entanglement, cutting or crushing at headers, feeder mechanisms, augers, belts and threshing components, especially during blockage clearing.
  • Fire caused by accumulated dry crop material contacting hot components or by electrical and mechanical faults.
  • Rollover or loss of control on slopes, unstable ground or during transport.
  • Blockage, excessive grain loss or grain damage from unsuitable settings, worn components or difficult crop conditions.
  • Crushing beneath an inadequately supported raised header during maintenance.
  1. Which of these failure modes and hazards hold for the sense of combine harvester this model covers, and on what evidence? provenance

Regional variation

Recalled without web access and unsourced; every item is a lead to verify.

  • Wet rice-growing regions commonly use tracked or otherwise low-ground-pressure machines, including compact designs.
  • Large-field grain regions commonly use high-capacity self-propelled machines with wide headers.
  • Regions with steep cultivated slopes use hillside or slope-compensating designs where conditions justify them.
  1. Which of these regional variation hold for the sense of combine harvester this model covers, and on what evidence? provenance

Neighbouring kinds and how to tell them apart

Recalled without web access and unsourced; every item is a lead to verify.

  • Forage harvester - Cuts and chops crop material for forage or silage rather than separating and cleaning grain.
  • Reaper - Cuts the standing crop but does not integrate threshing and grain cleaning.
  • Threshing machine - Separates grain from harvested crop material but does not itself gather the crop from the field as a combine does.
  • Swather or windrower - Cuts and lays crop in windrows for subsequent collection rather than completing grain recovery.
  1. Which of these neighbouring kinds and how to tell them apart hold for the sense of combine harvester this model covers, and on what evidence? provenance

What the second pass must settle

  • Does the existing Vercy catalogue already contain a world model covering combine harvesters that this registry entry should reference?
  • Which authoritative sources establish the intended coverage of historical, towed, self-propelled and specialised seed-harvesting combines?
  • Which safety standards, editions, conformity marks and transport requirements apply in the intended jurisdictions and to which machine generations?
  • What defensible capacity, dimension and performance ranges can be published with crop, moisture, configuration and measurement basis specified?
  • Which loss-sampling methods and sensor-calibration procedures support reliable comparison across different threshing and separation architectures?