Hydraulic Hammer Flow Control for Simultaneous Chamber Pressurization
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Solution Overview
Problem
Conventional hydraulic hammers require separate charging tools for each chamber, leading to potential performance issues due to incorrect charge supply and increased costs.
Innovation Solution
A hydraulic hammer design with a primary passage branching into first and second passages, equipped with a flow control device featuring a valve element that adjusts based on pressure input signals to control charge distribution between chambers, ensuring efficient pressurization of each chamber to specific pressures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If individual charging tools are employed to charge each chamber separately, then each chamber can be charged to predefined pressure, but the complexity of the charging system increases and performance issues may occur due to incorrect charge supply
Solution Approach 1:
The patent combines multiple charging functions into a single integrated charging system. The common charge passage distributes charge to multiple chambers simultaneously, eliminating the need for separate charging tools for each chamber. This merging approach reduces system complexity while maintaining precise pressure control through the flow control device.
Solution Approach 2:
The flow control device acts as an intermediary between the common charge passage and the chambers. It mediates the charge distribution by controlling flow rates to each chamber based on their specific pressure requirements, ensuring precise charging pressure without requiring separate charging tools for each chamber.
2Reliability
If separate charging tools are used for each chamber, then charging control is possible, but the cost and time required for charging increases
Solution Approach 1:
The common charge passage enables continuous and simultaneous charging of multiple chambers. Instead of sequentially charging each chamber with separate tools, the system continuously distributes charge to all chambers at once, significantly reducing total charging time while maintaining reliable pressure control through the flow control device.
Solution Approach 2:
Multiple charging operations are merged into a single simultaneous charging process. The integrated system charges all chambers through one common passage with one flow control device, eliminating the time required to switch between separate charging tools while maintaining charging control reliability.
3Stress or pressure
If conventional charging methods are used, then chambers can be pressurized, but incorrect charge supply causes performance issues in the hydraulic hammer
Solution Approach 1:
The flow control device incorporates feedback mechanisms to monitor and adjust charge flow to each chamber. By sensing pressure conditions and automatically regulating flow rates, the system ensures each chamber receives the correct charge amount, preventing performance issues caused by incorrect pressurization while maintaining reliable hydraulic hammer operation.
Solution Approach 2:
The flow control device serves as an intermediary that precisely controls charge distribution to chambers. It mediates between the common charge passage and individual chambers, ensuring each receives the correct pressure and charge amount, thereby preventing performance issues while maintaining reliable operation.
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 allows for simultaneous and accurate charging of both chambers, minimizing the need for separate charging tools, reducing costs, and ensuring efficient operation by maintaining chambers at predetermined pressures.
Implementation Method 1
a valve element adapted to move between a first position and a second position based on an input signal indicative of a pressure of charge in the first chamber
Implementation Method 2
The valve element allows flow of charge from the primary passage to the first chamber in the first position and restricts flow of charge from the primary passage to the first chamber in the second position
Data Source
AI summary
A hydraulic hammer for a machine is provided. The hydraulic hammer includes a housing and a piston disposed within the housing and adapted to reciprocate along a longitudinal axis of the housing. The hydraulic hammer further includes a first chamber and a second chamber defined within the housing. The hydraulic hammer further includes a primary passage extending from an inlet and branching into a first passage and a second passage. The first passage fluidly communicates the primary passage with the first chamber and the second passage fluidly communicates the primary passage with the second chamber. The hydraulic hammer further includes a flow control device coupled to the first passage. The flow control device includes a valve element adapted to move between a first position and a second position based on an input signal indicative of a pressure of charge in the first chamber.