---
title: "Upper Structure (House)"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:UPPER_STRUCTURE_HOUSE"
  data_integrity_hash: "c9314f8c4bf7bf61470bc4e2a82a8b82"
  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:UPPER_STRUCTURE_HOUSE"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/upper-structure-house.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/upper-structure-house"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-360 degrees continuous rotation at 0-12 rpm, structural load capacity 15-45 kNÂ·m bending moment"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 55
    unit: "kNÂ"
    consequence: "Bending fatigue failure due to cyclic loading exceeding material yield strength (S355 steel, 355 MPa yield)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Bearing raceway pitting from contaminated lubricant (ISO 4406 code &gt;18/16/13)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Sealed-for-life tapered roller bearings with IP67 protection and automated grease monitoring"
  - node_2:
      trigger: "Structural resonance at 8-12 Hz matching engine vibration frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Finite element analysis-optimized ribbing pattern and tuned mass dampers at 10 Hz natural frequency"
bom_nodes:
  operators-cab:
    type: "part"
    urn: "URN:CNFX:ME:OPERATORS_CAB"
    interface_type: "physical-logic-coupled"
  engine-mounting-frame:
    type: "part"
    urn: "URN:CNFX:ME:ENGINE_MOUNTING_FRAME"
    interface_type: "physical-logic-coupled"
  hydraulic-pump-mounting-plate:
    type: "component"
    urn: "URN:CNFX:ME:HYDRAULIC_PUMP_MOUNTING_PLATE"
    interface_type: "physical-logic-coupled"
  counterweight-mounting-structure:
    type: "component"
    urn: "URN:CNFX:ME:COUNTERWEIGHT_MOUNTING_STRUCTURE"
    interface_type: "physical-logic-coupled"
  swing-bearing-mounting-ring:
    type: "component"
    urn: "URN:CNFX:ME:SWING_BEARING_MOUNTING_RING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING FOR CONSTRUCTION PRODUCTS REGULATION (EU) NO 305/2011"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/upper-structure-house.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "bef3109a7026b8992d67887299407e088d36b3ece11372652d93a09ec94fafc6"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Upper Structure (House)

## 1. Technical Definition
The rotating platform of a hydraulic excavator that houses the operator's cab, engine, hydraulic pumps, and other key components.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-360 degrees continuous rotation at 0-12 rpm, structural load capacity 15-45 kNÂ·m bending moment**. Failure boundary: **Structural failure occurs at 55 kNÂ·m bending moment or 0.5 mm permanent deformation at bearing raceways**, Mechanism: **Bending fatigue failure due to cyclic loading exceeding material yield strength (S355 steel, 355 MPa yield)**.

### 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 raceway pitting from contaminated lubricant (ISO 4406 code &gt;18/16/13) | 8 | Increased rotational resistance exceeding 120 NÂ·m torque at 5 rpm | Sealed-for-life tapered roller bearings with IP67 protection and automated grease monitoring |
| Structural resonance at 8-12 Hz matching engine vibration frequency | 8 | Accelerated crack propagation at weld joints exceeding 2 mm/year growth rate | Finite element analysis-optimized ribbing pattern and tuned mass dampers at 10 Hz natural frequency |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Operator's Cab](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/operators-cab.md) `(Standalone System)`
- [Engine Mounting Frame](https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/engine-mounting-frame.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Hydraulic Power Unit**, **Engine Cooling System**, **Operator Control System**  
**Downstream Applications**: Hydraulic Excavator, Construction Equipment Assembly, Heavy Machinery Final Product  

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

### Q: What materials are used in the upper structure construction?
**A**: The upper structure is fabricated from high-strength steel and structural steel plate, ensuring durability and load-bearing capacity for heavy machinery applications.

### Q: What components does the excavator upper structure house?
**A**: It houses the operator's cab, engine, hydraulic pumps, swing bearing mounting ring, counterweight mounting structure, and all associated mounting frames and plates.

### Q: How does the upper structure contribute to excavator performance?
**A**: The rotating platform provides stable mounting for critical components, enabling smooth 360-degree rotation while maintaining structural integrity under heavy operational loads.

## 6. Manufacturing Compliance
- ISO 9001:2015 QUALITY MANAGEMENT SYSTEMS
- CE MARKING FOR CONSTRUCTION PRODUCTS REGULATION (EU) NO 305/2011

---
### ðŸ› ï¸ Engineering Resource Access
ðŸ”— **[Full Specification: Upper Structure (House)](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/upper-structure-house)**

### ðŸŒ 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**: UPPER_STRUCTURE_HOUSE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 0b8d4eb5
