Modular Cylinder Head Body Assembly for Flexible Crane Maintenance

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Solution Overview

Problem

Existing single-cylinder-bolt cylinder head bodies have inflexible assembly sequences, low production efficiency, and difficult maintenance due to being welded or assembled in a one-piece structure, which restricts assembly and disassembly, leading to inefficiencies and increased maintenance costs.

Innovation Solution

A cylinder head body composed of at least two branch bodies with a cooperative positioning structure and a fixed connection structure, allowing for flexible assembly and disassembly, enabling the cylinder head body to be dismounted into branch structures, thus avoiding the limitations of traditional assembly sequences and improving production efficiency and maintenance accessibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the cylinder head body is made as a one-piece forged or welded structure, then the structural strength and integrity are improved, but the assembly sequence becomes inflexible and maintenance becomes difficult

Engineering Contradiction:
Improvestructural strengthVSAvoidassembly flexibility
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The cylinder head body is divided into multiple modular segments that can be assembled independently. Each segment can be manufactured separately and then connected through connection structures, allowing flexible assembly sequences and easier maintenance without compromising overall structural integrity.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If the cylinder head body is made as a one-piece structure, then the manufacturing process is simplified, but the production efficiency decreases due to cumbersome assembly sequences

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidproduction efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The cylinder head body is segmented into multiple modules that can be manufactured in parallel. This allows different segments to be produced simultaneously by different workstations or even different suppliers, significantly improving production efficiency while maintaining manufacturing simplicity through standardized connection interfaces.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Connection structures and positioning features are pre-designed and pre-assembled on individual segments before final assembly. This preliminary preparation work enables faster final assembly operations and improves overall production efficiency.

Inventive Principle:
Principle #10Preliminary action

3Stability of the object's composition

If the cylinder head body is welded or assembled in a fixed sequence, then the structural integrity is maintained, but the maintenance accessibility and disassembly convenience are reduced

Engineering Contradiction:
Improvestructural integrityVSAvoidmaintenance accessibility
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The modular segmented structure allows specific segments to be independently removed for maintenance or replacement. Connection structures are designed to facilitate easy disassembly and reassembly, improving maintenance accessibility while maintaining structural integrity through proper connection design.

Inventive Principle:
Principle #1Segmentation

4Ease of manufacture

If the cylinder head body is assembled in a fixed sequence, then the assembly process is standardized, but the production flexibility and adaptability are reduced

Engineering Contradiction:
Improveassembly standardizationVSAvoidassembly flexibility
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The segmented modular design with standardized connection interfaces enables both standardized assembly processes and flexible reconfiguration. Different segments can be assembled in various sequences depending on production requirements, and the same module can be adapted for different applications, providing both standardization and flexibility.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3248929B1Cylinder head body, single cylinder bolt system, and crane
Publication Date: 2021.05.12 XUZHOU HEAVY MASCH CO LTD
  • EP3248929B1 patent drawingFigure 1~2
  • EP3248929B1 patent drawingFigure 3~4
  • EP3248929B1 patent drawingFigure 5

AI summary

The invention relates to a cylinder head body, a single cylinder bolt system and a crane, wherein, the cylinder head body comprises at least two branch bodies of cylinder head body, a cooperative positioning structure and a fixed connection structure are provided between two adjacent branch bodies of cylinder head body of the at least two branch bodies of cylinder head body, the branch body of cylinder head body has a cylindrical branch body structure, the cylindrical branch body structures of the at least two branch bodies of cylinder head body are cooperatively positioned by means of the cooperative positioning structure and are detachably connected by means of the fixed connection structure to form a barrel. The cylinder head body is composed of at least two branch bodies of cylinder head body in a dismountable way, which are cooperatively positioned and detachably connected by the cooperative positioning structure and the fixed connection structure, respectively, such that the cylinder head body may be dismounted into branch body structures during assembling, assembling manner thereof is not restricted by traditional assembling sequence, thereby improving the assembling efficiency and production efficiency. Moreover, the branch body structure of the cylinder head body is easy to dismount and maintain, which saves maintenance cost.