Cone Crusher Spindle Clamping Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing cone crushers face challenges in the complex and precise manufacturing of conical seat surfaces, particularly for large spindles, which complicates the installation and removal of the spindle, often requiring heavy tools and pressurized oil assemblies due to the harsh environment and high wear conditions.
Innovation Solution
The use of a cylindrical seat with a force-fitting mechanism using two mechanical clamping devices, each acting as a conical clamping set, provides secure support without the need for heavy tools, allowing for easy installation and removal of the spindle, and simplifies the positioning of oil ducts by utilizing accessible screw assemblies and an axial stop for precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conical seat is used to clamp the spindle, then the spindle is securely fixed, but the manufacturing complexity and precision requirements increase significantly
Solution Approach 1:
The single complex conical seat is segmented into multiple simpler clamping elements (first and second clamping devices) that act on different portions of the spindle. Each clamping device has its own clamping element with a clamping surface, dividing the complex fixation task into manageable segments that are easier to manufacture and assemble.
Solution Approach 2:
Instead of using a single complex conical seat that requires high precision manufacturing, the invention inverts the approach by using multiple simpler clamping devices with clamping elements that can be manufactured with lower precision requirements. The security is achieved through the combined action of multiple elements rather than one complex element.
2Manufacturing precision
If a conical seat with high precision is used, then the spindle positioning is accurate, but the removal of the spindle becomes difficult
Solution Approach 1:
The fixation system is segmented into multiple independent clamping devices that can be operated separately. This allows the spindle to be released by actuating the clamping devices in reverse sequence, making removal easier compared to a single fixed conical seat that requires heavy tools and pressurized oil assemblies.
Solution Approach 2:
The clamping devices are designed to be dynamically adjustable and reversible. The clamping elements can be moved between clamped and released states through actuation, providing dynamic control over the spindle fixation. This dynamic capability enables easy removal without requiring excessive force or specialized tools.
3Ease of repair
If heavy tools and pressurized oil assemblies are used to remove the spindle, then the spindle can be released from the conical seat, but the risk of damage to the crusher increases
Solution Approach 1:
The removal process is segmented into controlled steps by operating individual clamping devices separately. This distributes the release forces across multiple points rather than applying concentrated forces from heavy tools, reducing the risk of damage to the crusher structure.
Solution Approach 2:
The clamping devices are designed to release the spindle through their own mechanical action without requiring external heavy tools or pressurized oil assemblies. The actuation mechanism of each clamping device provides sufficient force to release its clamping element from the spindle, enabling tool-free or light-tool removal.
4Ease of operation
If a cylindrical seat with force-fitting mechanism is used, then the installation and removal are simplified, but additional clamping devices are required
Solution Approach 1:
The force-fitting mechanism is implemented through segmented clamping devices that can be independently positioned and actuated. This segmentation allows for simpler individual device design compared to a single complex mechanism, and the modular nature facilitates easier installation and removal despite having multiple devices.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces the complexity and cost of maintenance, enables quick and tool-free spindle replacement, and ensures robust construction with lower structural complexity, enhancing the efficiency and throughput of cone crushers while maintaining secure support.
Implementation Method 1
a first and a second clamping device (14.1, 14.2) which are designed to be actuated mechanically and which secure the crusher shaft (7) in a force-fitting manner
Implementation Method 2
use of a heavy tool should be avoided as far as possible because of the risk of damage to the crushers
Data Source
AI summary
A cone crusher may include a crushing cone held on a driven eccentric bushing. The eccentric bushing may rotate in a radial direction about a spindle. The spindle may be fixedly clamped in a spindle receptacle provided in a housing lower part. The spindle may comprise a cylindrical upper bearing portion that is braced in a bore that forms the spindle receptacle by way of an upper mechanical clamping device.