Hydraulic Hammer Internal Damping for Shock and Noise Reduction
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Solution Overview
Problem
Existing hydraulic hammers experience significant shock loading and noise due to the impact of the piston on the hammer tool, which is transferred to the carrying machine, necessitating costly and unreliable large non-metallic components for damping.
Innovation Solution
A hydraulic hammer design incorporating a cylinder, piston, seal carrier, and damping fluid reservoir that dampens the impact forces internally, using a compressible damping fluid to absorb energy and reduce shock loading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If large non-metallic components are used for damping, then shock loading and noise are reduced, but cost increases and reliability decreases
Solution Approach 1:
The patent employs hydraulic fluid within the cylinder to provide damping effects. The hydraulic system absorbs shock loads through fluid compression and flow resistance, reducing noise and vibration transmitted to the carrying machine while maintaining reliability through proven hydraulic technology
Solution Approach 2:
The invention introduces an intermediary damping mechanism within the hydraulic system that absorbs impact energy between the piston and hammer tool. This internal damping intermediary reduces shock transmission without requiring external non-metallic components
2Object-affected harmful factors
If large non-metallic components are used for damping, then shock loading is reduced, but manufacturing cost increases
Solution Approach 1:
The hydraulic system serves dual purposes: operating the hammer and providing shock damping. The existing hydraulic fluid and cylinder infrastructure are utilized for damping functions, eliminating the need for separate expensive non-metallic damping components
Solution Approach 2:
The hydraulic fluid performs multiple functions simultaneously: power transmission for hammer operation and shock absorption for damping. This multi-functionality eliminates the need for additional dedicated damping components, reducing manufacturing cost
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
The internal damping system effectively reduces shock loading and noise, improving operator comfort while eliminating the need for large non-metallic components, thereby reducing costs and enhancing reliability.
Implementation Method 1
using a compressible damping fluid to absorb energy and reduce shock loading
Data Source
AI summary
A hydraulic hammer includes: a cylinder having a first cylinder end and a second cylinder end opposite the first cylinder end; a piston disposed within the cylinder, the piston having a first piston end, the piston being reciprocatingly movable with respect to the cylinder along an axial direction; a valve body disposed on the first cylinder end so as to define a valve body cavity; and a seal carrier sealingly arranged between the first piston end and the first cylinder end and being reciprocatingly movable with respect to the cylinder along the axial direction. The piston is reciprocatingly movable with respect to the seal carrier along the axial direction.