{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.pulley","code":"thing-q48378","url":"https://ver.cy/models/thing/q48378/","name":"pulley","alternateNames":["Geojunggi","Nokro","climbing pulley","pulley block","Compound pulley"],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A pulley is a rotating machine element whose rim, groove, or toothed profile carries a flexible tensile member (rope, cable, or belt), thereby changing the direction of tension and, in multiple-wheel arrangements, producing a mechanical advantage.","purpose":"Enable an AI agent to recognise a pulley, assess its compatibility and condition, and determine which routing, rotation, adjustment or service actions are supported by available evidence.","scope":{"in":["Recognition of the pulley and identification of its working surfaces","Wheel, groove or tooth geometry and compatibility with the intended flexible member","Hub, bearing or bushing arrangements and attachment interfaces","Installed alignment, engagement and rotational behaviour","Observed damage, wear, maintenance needs and evidence supporting permitted use"],"out":["The construction, condition and service history of the rope, cable or belt","The complete hoist, tackle, conveyor or belt-drive system","The structural adequacy of supporting beams, anchors and machine frames","The load being lifted or the machines supplying and receiving power","System-wide guarding, control logic and operating procedures"],"boundaries":[]},"distinguishingFeatures":["Check whether a flexible member is intended to engage the circumference of a wheel that rotates about an axis; distinguish this from a stationary eye or fairlead.","Check the intended mating member: engagement with a rope, cable or belt supports pulley identification, while intended engagement with another gear or a chain requires a neighbouring classification.","Check whether the working circumference routes or drives a passing flexible member rather than primarily accumulating successive wraps for storage, as a drum or reel would.","Check whether the wheel directly engages the flexible member rather than directly supporting the transported object, as a conveyor roller may.","Check whether the identified item is one pulley or a larger block or tackle containing pulleys, attachment hardware and other components."],"structure":{"bundles":[{"id":"pulley-identity","name":"Pulley identity","description":"Establish what item is being modelled and how its circumference interacts with a flexible member.","layers":[{"id":"recognition-boundary","name":"Recognition and boundary","description":"Identify the rotating working wheel and establish the extent of this instance.","findings":[{"id":"working-wheel-boundary","name":"Working wheel boundary","description":"Record the evidence identifying the pulley and separating it from adjacent components.","questions":[{"text":"Which circumferential surface engages a rope, cable or belt, and about which axis does it rotate?","id":"working-wheel-boundary-q01","kind":"definition"},{"text":"Does this instance denote the wheel alone, a pulley with integral support, or an assembly that needs a separate model?","id":"working-wheel-boundary-q02","kind":"boundary"}]}]},{"id":"role-and-identification","name":"Role and identification","description":"Connect physical identity with intended use and traceable product evidence.","findings":[{"id":"identified-pulley-role","name":"Identified pulley role","description":"Record the intended role without inferring a rating from its appearance.","questions":[{"text":"Is this pulley intended to redirect, support, tension or drive its flexible member, and what establishes that role?","id":"identified-pulley-role-q01","kind":"definition"},{"text":"Which markings, drawings or product records identify this exact pulley variant?","id":"identified-pulley-role-q02","kind":"provenance"}]}]}]},{"id":"member-engagement","name":"Flexible-member engagement","description":"Describe the contact geometry and evidence needed to match the pulley to a rope, cable or belt.","layers":[{"id":"contact-profile","name":"Contact profile","description":"Capture the dimensions and form that govern seating and engagement.","findings":[{"id":"rim-groove-tooth-geometry","name":"Rim, groove or tooth geometry","description":"Record applicable geometry with explicit measurement references.","questions":[{"text":"Is the working surface smooth, crowned, grooved or toothed, and which dimensions identify its profile?","id":"rim-groove-tooth-geometry-q01","kind":"measurement"},{"text":"Which measured diameter is outside, groove-root or working diameter, and how was each established?","id":"rim-groove-tooth-geometry-q02","kind":"measurement"}]}]},{"id":"compatible-member","name":"Compatible member","description":"Establish which member specifications the contact geometry is intended to accept.","findings":[{"id":"member-fit-evidence","name":"Member fit evidence","description":"Separate documented compatibility from an observed ability to place a member on the wheel.","questions":[{"text":"Which rope, cable or belt sizes and profiles are explicitly supported by the pulley documentation?","id":"member-fit-evidence-q01","kind":"provenance"},{"text":"What checks are required before fitting a proposed replacement member to this pulley?","id":"member-fit-evidence-q02","kind":"action"}]}]}]},{"id":"rotation-and-attachment","name":"Rotation and attachment","description":"Describe how the wheel rotates, is retained and connects mechanically to its surroundings.","layers":[{"id":"rotational-support","name":"Rotational support","description":"Identify the moving interfaces and their service requirements.","findings":[{"id":"hub-bearing-arrangement","name":"Hub and bearing arrangement","description":"Record where relative rotation occurs and which components provide support.","questions":[{"text":"Does the wheel rotate relative to a stationary axle, or does it rotate with a shaft?","id":"hub-bearing-arrangement-q01","kind":"definition"},{"text":"Which bearings, bushings or contact surfaces support that rotation, and what instructions apply to their servicing?","id":"hub-bearing-arrangement-q02","kind":"provenance"}]}]},{"id":"retention-and-coupling","name":"Retention and coupling","description":"Capture attachment features that keep the wheel located and, where applicable, transmit torque.","findings":[{"id":"attachment-integrity","name":"Attachment integrity","description":"Record the pulley-side interfaces and evidence that their assembly is correct.","questions":[{"text":"Which shoulders, retainers, fasteners, keys or clamping features locate this pulley and couple it to its support?","id":"attachment-integrity-q01","kind":"definition"},{"text":"What inspection or assembly evidence is needed before accepting its axial retention and torque connection?","id":"attachment-integrity-q02","kind":"action"}]}]}]},{"id":"installed-routing","name":"Installed routing","description":"Relate the pulley to the actual path and engagement of its flexible member.","layers":[{"id":"path-and-alignment","name":"Path and alignment","description":"Record the member's approach, departure and contact around the wheel.","findings":[{"id":"installed-contact-path","name":"Installed contact path","description":"Capture routing geometry relative to the pulley axis and working profile.","questions":[{"text":"What are the member's entry direction, exit direction and wrap angle relative to the pulley axis?","id":"installed-contact-path-q01","kind":"measurement"},{"text":"Which installation specification defines acceptable alignment for this pulley and member combination?","id":"installed-contact-path-q02","kind":"provenance"}]}]},{"id":"tracking-and-containment","name":"Tracking and containment","description":"Assess seating and the features intended to keep the member on its path.","findings":[{"id":"member-tracking-evidence","name":"Member tracking evidence","description":"Record observed contact and containment without assuming that flanges or keepers eliminate escape.","questions":[{"text":"What evidence shows the member remains seated, or instead rubs, climbs, slips or leaves its intended track?","id":"member-tracking-evidence-q01","kind":"measurement"},{"text":"Which flanges or keepers belong to this pulley instance, and which containment components belong to its surrounding assembly?","id":"member-tracking-evidence-q02","kind":"boundary"}]}]}]},{"id":"condition-and-permitted-use","name":"Condition and permitted use","description":"Connect pulley-specific inspection evidence and applicable limits to decisions about continued use or service.","layers":[{"id":"wear-and-rotation","name":"Wear and rotation","description":"Assess working-surface damage and the behaviour of the supported wheel.","findings":[{"id":"pulley-condition-evidence","name":"Pulley condition evidence","description":"Record inspected areas, observed defects and relevant acceptance criteria.","questions":[{"text":"What groove, tooth, rim or hub wear, cracking or deformation is visible, and which areas remain uninspected?","id":"pulley-condition-evidence-q01","kind":"measurement"},{"text":"What play, runout, binding or roughness is observed during an authorised rotation check, and how does it compare with applicable criteria?","id":"pulley-condition-evidence-q02","kind":"measurement"}]}]},{"id":"limits-and-disposition","name":"Limits and disposition","description":"Determine which operating and maintenance actions the available evidence supports.","findings":[{"id":"supported-use-decision","name":"Supported use decision","description":"Associate operating limits and condition findings with an explicit action or unresolved decision.","questions":[{"text":"Which load, torque, speed and environmental limits apply to this exact pulley, and under what installation assumptions?","id":"supported-use-decision-q01","kind":"provenance"},{"text":"Do the documented limits and observed condition support continued use, adjustment, servicing or replacement, and what missing evidence prevents a decision?","id":"supported-use-decision-q02","kind":"action"}]}]}]},{"id":"evidence-and-external-alignment","name":"Evidence and external alignment","description":"What the world already says about this thing, gathered so the model can be checked against it.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-kinds","name":"Kinds and varieties","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these kinds and varieties hold for the sense of pulley this model covers, and on what evidence?","id":"evidence-kinds-q01","kind":"provenance"}]},{"id":"evidence-identifiers","name":"Identifiers and schemes","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these identifiers and schemes hold for the sense of pulley this model covers, and on what evidence?","id":"evidence-identifiers-q01","kind":"provenance"}]},{"id":"evidence-standards-and-regulation","name":"Standards and regulation","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these standards and regulation hold for the sense of pulley this model covers, and on what evidence?","id":"evidence-standards-and-regulation-q01","kind":"provenance"}]},{"id":"evidence-real-world-use","name":"Real-world use","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these real-world use hold for the sense of pulley this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-measurements","name":"Typical measurements","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these typical measurements hold for the sense of pulley this model covers, and on what evidence?","id":"evidence-measurements-q01","kind":"provenance"}]},{"id":"evidence-failure-modes-and-hazards","name":"Failure modes and hazards","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of pulley this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","kind":"provenance"}]},{"id":"evidence-regional-variation","name":"Regional variation","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these regional variation hold for the sense of pulley this model covers, and on what evidence?","id":"evidence-regional-variation-q01","kind":"provenance"}]},{"id":"evidence-neighbours","name":"Neighbouring kinds and how to tell them apart","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of pulley this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Inspect and report wear on pulleys, sheaves, ropes and belts it is authorized to maintain.","Operate pulley systems within their rated load and the operator's instructions."],"mustNot":["Lift or hold loads over people with a pulley system.","Use a pulley or rope beyond its rated working load or with worn components.","Leave guards off running pulleys where hands or clothing can be drawn in.","Use lifting gear that has not passed its required inspection."],"requiresHuman":["Approving lifting equipment for use after repair or inspection.","Lifting people with a pulley system."]},"ethics":{"considerations":["Lifting accidents kill and injure workers and bystanders.","Pulleys help people move loads they could not lift alone, reducing strain injuries."],"affectedParties":["Workers and riggers","Bystanders under loads"]},"owners":{"steward":"The owner of the equipment; the employer answers for safe lifting at work.","roles":[],"masterSystems":[]},"relations":[{"target":"Q186713","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.pulley","Wikidata: Q48378 (https://www.wikidata.org/wiki/Q48378)"]},"properties":{"applicability":"required","items":["Functional role: redirecting, supporting, tensioning, driving, driven, multiple roles, unresolved","Flexible-member compatibility: Identified rope, cable or belt specification, with compatibility evidence","Working circumference form: Smooth, crowned, grooved, multiple-grooved, toothed, other, unresolved","Wheel diameters: mm; distinguish outside, groove-root and specified working or pitch diameter","Engagement profile: Groove count, width and depth in mm, profile angles in degrees, or tooth pitch in mm as applicable","Rotational support and mounting: Bearing or bushing arrangement, bore and hub form, shaft coupling and retention method","Installed engagement geometry: Wrap and entry/exit angles in degrees; alignment offsets in mm, with reference frame","Mechanical condition: Observed cracks, deformation, wear, corrosion, looseness, rough rotation or unassessed areas","Documented operating envelope: Applicable manufacturer or engineering evidence for load, torque, speed and environmental limits"]},"recognition":{"applicability":"required","items":["A pulley has a wheel with a rim, groove or toothed profile intended to carry a flexible tensile member.","Its central hub rotates around an axle or shaft, sometimes within a supporting frame.","An installed rope or cable follows part of the wheel's circumference rather than winding into multiple storage layers as on a drum.","A toothed belt pulley engages a flexible belt rather than directly meshing with another rigid gear."]},"capabilities":{"applicability":"required","items":["Identify the pulley and distinguish it from its enclosing block or machine assembly.","Check a proposed rope, cable or belt against documented engagement requirements.","Assess the installed routing, alignment and retention of the flexible member.","Inspect accessible working surfaces and evaluate rotation under an authorised inspection procedure.","Determine whether adjustment, lubrication, replacement or removal from service is supported by condition evidence and applicable instructions."]},"hazards":{"applicability":"required","items":["Rope or belt failure can drop a load or whip back.","Running pulleys can trap fingers, hair and clothing."]},"interfaces":{"applicability":"required","items":["ISO 12100, issued by the International Organization for Standardization, provides machinery risk assessment and risk reduction principles applicable to machines incorporating pulleys.","ASME B30.26, issued by the American Society of Mechanical Engineers, covers rigging hardware including rigging blocks used in load handling."]},"context":{"applicability":"required","items":["Pulleys guide ropes, cables and belts in lifting equipment, machinery and everyday mechanisms.","A fixed pulley redirects tension, while suitable arrangements of moving pulleys can provide mechanical advantage.","Belt pulleys also transmit rotary motion between shafts when their profiles match the belt."]}},"sources":[{"title":"Pulley","url":"https://en.wikipedia.org/wiki/Pulley","note":"Simple-machine classification (fixed, movable, compound), block-and-tackle practice, and the everyday distinction between the wheel and the framed block."},{"title":"ISO 4183, Belt drives - Classical and narrow V-belts - Grooved pulleys (system based on datum width)","url":"","note":"The industrial identity of grooved V-belt pulleys, including datum-width groove geometry and profile families used in power transmission."},{"title":"ISO 5294, Synchronous belt drives - Pulleys","url":"","note":"Toothed timing-belt pulleys as a distinct product class from friction V-belt pulleys."},{"title":"ISO 16625, Cranes and hoists - Selection of wire ropes, drums and sheaves","url":"","note":"Wire-rope sheaves as a lifting-gear element whose diameter is chosen relative to rope construction and duty."},{"title":"29 CFR 1910.219, Mechanical power-transmission apparatus","url":"https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.219","note":"Workplace guarding, location, and running practice for power-transmission pulleys and belts in US industry."},{"title":"Harmonized System heading 8483.50, Flywheels and pulleys, including pulley blocks","url":"","note":"Customs identity of pulleys and pulley blocks as a named class of goods."},{"title":"Wikidata item Q48378: pulley","url":"https://www.wikidata.org/wiki/Q48378","note":"identity and sense of the item"}],"openQuestions":["Does registry usage include toothed belt pulleys and smooth idlers within this entry, and where does it place the boundary with sprockets and rollers?","Should integral bearing carriers and rope-retaining side plates belong to a pulley instance or to a separately registered block assembly?","Which authoritative sources establish profile compatibility and diameter requirements for the pulley families covered by this entry?","Which inspection and rejection criteria apply to each pulley material, construction and intended service?","How should documented component ratings be related to installed-use decisions when the surrounding system's loads or configuration remain unresolved?"],"resources":{"spec":"/models/things/publications/thing-q48378/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q48378/spec.json"],"providers":["Codex","Grok"],"researchStatus":"unreviewed","generatedAt":"2026-09-07T11:55:49Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T12:16:33+00:00: completeness 1.00; sense: Wikidata description; 3 live sources; review by codex: pass"},"score":1.0}}