Hydraulic Hammer Accumulator Pressure Indicator
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Solution Overview
Problem
Hydraulic hammers face high operation costs due to the complexity and expense of charging accumulators without knowing the actual gas pressure, leading to potential performance drops if gas pressure falls below minimum levels.
Innovation Solution
A pressure indicator system for hydraulic hammers, comprising a sleeve member, a plunger, and an elastic member, which provides a visual indication of gas pressure within the accumulator by moving between defined positions based on pressure changes, allowing operators to monitor and maintain optimal pressure levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the gas pressure in the accumulator is not monitored, then the charging cost and complexity remain high, but the operation cost increases and performance drops due to unknown pressure levels
Solution Approach 1:
A plunger acts as an intermediary mechanism that translates gas pressure into a visible positional indicator. The plunger is pushed by gas pressure through a sleeve member, with its position indicating pressure levels without requiring complex electronic sensors or measurement systems.
Solution Approach 2:
The accumulator system uses its own internal gas pressure to drive the indicator mechanism. The gas pressure directly moves the plunger, eliminating the need for external power sources, sensors, or complex measurement equipment to monitor pressure levels.
2Ease of operation
If the accumulator is charged without knowing actual pressure, then the system remains simple to operate, but charging becomes expensive and complex
Solution Approach 1:
The system uses visual position changes of the plunger within the sleeve member to indicate different pressure levels. The plunger's position serves as a visual signal (analogous to color changes) that provides immediate feedback on whether charging is needed and what the current pressure state is.
Solution Approach 2:
The plunger and sleeve member assembly serves as an intermediary information transmission system that converts internal gas pressure data into visible external indicators, allowing operators to make informed charging decisions without complex measurement equipment.
3Reliability
If multiple accumulators are used to improve reliability, then the system can maintain operation under failure conditions, but the complexity and cost of monitoring and managing multiple accumulators increases
Solution Approach 1:
Each accumulator is equipped with its own independent pressure indicator system (plunger and sleeve member). This segmentation allows each accumulator to be monitored independently through simple visual indicators, avoiding the need for complex centralized monitoring systems that would be required to manage multiple accumulators reliably.
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
Enables operators to accurately determine the gas pressure within the accumulator, reducing operation costs by allowing for timely charging and maintaining desired performance levels, thus preventing performance drops.
Implementation Method 1
an elastic member inserted over the plunger and disposed between the wall housing of the accumulator and the flange. The plunger is movable between the first position and the second position relative to the sleeve member against a biasing force of the elastic member
Data Source
AI summary
A pressure indicator for a hydraulic hammer is provided. The pressure indicator includes a sleeve member configured to couple to an opening defined in a wall housing of an accumulator of the hydraulic hammer. The pressure indicator further includes a plunger slidably disposed within the sleeve member and movable between a first position and a second position with respect to the sleeve member. The plunger includes a first end disposed outside the wall housing of the accumulator. The plunger further includes a flange coupled to a second end. The pressure indicator further includes an elastic member inserted over the plunger and disposed between the wall housing of the accumulator and the flange. A position of the first end of the plunger with reference to an outer end of the sleeve member provides a visual indication of the pressure of the gas within the accumulator.