---
title: "House (Upper Structure)"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:HOUSE_UPPER_STRUCTURE"
  data_integrity_hash: "c79bd91f59f07398534a7070852115ca"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:HOUSE_UPPER_STRUCTURE"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/house-upper-structure.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/house-upper-structure"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.5 RPM rotational speed, 15-35°C ambient temperature range, 0.1-0.3 mm radial bearing clearance"
    unit: "tonnes"
engineering_limits:
  max_safe_operating_point:
    value: 3.8
    unit: "RPM"
    consequence: "High-cycle fatigue from cyclic loading at 0.5-2.5 Hz operational frequency, thermal expansion mismatch between steel (α=12×10⁻⁶/°C) and aluminum (α=23×10⁻⁶/°C) components, Hertzian contact stress exceeding 1.5 GPa at gear meshing interfaces"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Bearing lubricant contamination with 15 μm+ particulate matter"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Triple-sealed bearing housings with 5 μm filtration and continuous oil analysis monitoring"
  - node_2:
      trigger: "Torsional resonance at 2.3 Hz matching structural natural frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Finite element analysis-optimized ribbing pattern and dynamic vibration absorbers tuned to 2.1-2.5 Hz"
bom_nodes:
  slewing-ring:
    type: "part"
    urn: "URN:CNFX:ME:SLEWING_RING"
    interface_type: "physical-logic-coupled"
  machinery-deck:
    type: "part"
    urn: "URN:CNFX:ME:MACHINERY_DECK"
    interface_type: "physical-logic-coupled"
  operators-cab:
    type: "part"
    urn: "URN:CNFX:ME:OPERATORS_CAB"
    interface_type: "physical-logic-coupled"
  swing-gearbox:
    type: "part"
    urn: "URN:CNFX:ME:SWING_GEARBOX"
    interface_type: "physical-logic-coupled"
  counterweight-frame:
    type: "component"
    urn: "URN:CNFX:ME:COUNTERWEIGHT_FRAME"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE EN 1990 - EUROCODE: BASIS OF STRUCTURAL DESIGN"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/house-upper-structure.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "63a4d1714c8f25d700ca9cd945448359861e288a575cc914c20b196bfbe4b11e"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: House (Upper Structure)

## 1. Technical Definition
The rotating upper platform of a dragline excavator that houses the machinery and operator's cab.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.5 RPM rotational speed, 15-35°C ambient temperature range, 0.1-0.3 mm radial bearing clearance**. Failure boundary: **Structural failure occurs at 3.8 RPM rotational speed (centrifugal force exceeds 2.1×design limit), bearing seizure at 85°C lubricant temperature, gear tooth fracture at 450 MPa bending stress**, Mechanism: **High-cycle fatigue from cyclic loading at 0.5-2.5 Hz operational frequency, thermal expansion mismatch between steel (α=12×10⁻⁶/°C) and aluminum (α=23×10⁻⁶/°C) components, Hertzian contact stress exceeding 1.5 GPa at gear meshing interfaces**.

### 2.1 Analytical Physics Model
Governed by the **Frame Structural Deflection Analysis**:

> **Primary Equation**: $\delta = \frac{5 q L^4}{384 E I}$  
> **Engineering Impact**: Ensures structural stability for multi-stage machines.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| q | Uniform Load | Engineering Constant |
| E | Elastic Modulus | Engineering Constant |
| I | Moment of Inertia | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Bearing lubricant contamination with 15 μm+ particulate matter | 8 | Accelerated abrasive wear leading to 0.5 mm radial play in slewing ring bearings | Triple-sealed bearing housings with 5 μm filtration and continuous oil analysis monitoring |
| Torsional resonance at 2.3 Hz matching structural natural frequency | 8 | Crack propagation in weld joints at stress concentration factors (Kt) exceeding 3.5 | Finite element analysis-optimized ribbing pattern and dynamic vibration absorbers tuned to 2.1-2.5 Hz |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | tonnes | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Slewing Ring](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/slewing-ring.md) `(Standalone System)`
- [Machinery Deck](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/machinery-deck.md) `(Standalone System)`
- [Operator's Cab](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/operators-cab.md) `(Standalone System)`
- [Swing Gearbox](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/swing-gearbox.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Dragline Bucket**, **Hoist and Drag Ropes System**, **Power Generation and Distribution System**  
**Downstream Applications**: Large-Scale Excavation Pits, Open-Pit Mining Operations, Major Earthmoving Projects  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are used in the construction of the dragline upper structure?
**A**: The upper structure is constructed using high-strength steel plates and structural steel beams to withstand extreme loads and harsh mining environments.

### Q: What components are included in the upper structure assembly?
**A**: The assembly includes the slewing ring, machinery deck, operator's cab, swing gearbox, and counterweight frame - all integrated for optimal performance.

### Q: How does the upper structure contribute to dragline excavator operation?
**A**: The rotating upper platform houses all critical machinery and the operator's cab, enabling 360-degree rotation and precise control during excavation operations.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- CE EN 1990 - EUROCODE: BASIS OF STRUCTURAL DESIGN

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: House (Upper Structure)](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/house-upper-structure)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **5** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: HOUSE_UPPER_STRUCTURE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 70c6f6e6
