Dismantled parts from PC200LC-8M0 C15621.
The Hydraulic Breaker Line Tube of the Komatsu PC200LC-8M0 excavator is a critical component used to transport hydraulic fluid from the machine’s main hydraulic system to a hydraulic breaker or other attachments. The hydraulic breaker line is essential for enabling the excavator to perform functions that require high-impact forces, such as demolition, rock breaking, and concrete removal.
Here’s a detailed description of the Hydraulic Breaker Line Tube:
1. Functionality
- The primary function of the hydraulic breaker line tube is to deliver high-pressure hydraulic fluid from the excavator’s hydraulic pump to the breaker attachment. This hydraulic fluid powers the hydraulic breaker, which in turn delivers powerful hammering forces to break through hard materials.
- The breaker line is designed to handle the high flow rates and pressures required for operating heavy-duty attachments, ensuring efficient and safe operation.
2. Components
The Hydraulic Breaker Line Tube typically includes the following components:
- High-Pressure Hydraulic Tubes or Hoses: These tubes carry hydraulic fluid between the excavator’s hydraulic system and the attachment. They are made from materials that can withstand the extreme pressures generated by the hydraulic system.
- Fittings and Connectors: These are used to securely connect the breaker line to the excavator’s main hydraulic system and the breaker attachment. They are designed to provide leak-proof connections and are built to resist wear from pressure cycling.
3. Operation
- The hydraulic breaker line tube operates by transporting pressurized hydraulic fluid from the excavator’s hydraulic pump to the hydraulic breaker.
- The fluid flows through the high-pressure tubes or hoses, reaching the breaker where it powers the internal piston or hammer mechanism.
- As the operator activates the breaker via the excavator’s controls, the hydraulic fluid is cycled through the breaker, generating repetitive high-impact forces.
4. Pressure and Flow Requirements
- The hydraulic breaker line tube is designed to handle high pressures, typically in the range of several thousand psi (pounds per square inch), depending on the size of the breaker and the requirements of the excavator.
- The flow rate of the hydraulic fluid through the breaker line is also important. It must be sufficient to provide the breaker with the power needed for efficient operation, ensuring that the attachment delivers strong, consistent blows.
5. Construction and Materials
- The hydraulic breaker line tubes are made from heavy-duty, high-strength materials that can endure extreme hydraulic pressures. These materials are typically steel or reinforced flexible rubber hoses with multiple layers to resist bursting and wear.
- The tubing is often reinforced with wire braiding or synthetic fibers to provide additional strength and flexibility, allowing the system to handle repeated pressure cycles without failure.
6. Location and Routing
- The hydraulic breaker line tube is routed from the hydraulic pump through the excavator’s boom and arm, down to the breaker attachment. It is carefully placed along the structure of the excavator to avoid damage during operation.
- The routing is designed to prevent the hoses from getting caught or pinched during machine movements, ensuring smooth and uninterrupted operation.
7. Control System
- The operation of the hydraulic breaker line is often controlled from inside the cab, where the operator can activate or deactivate the breaker using joystick controls or additional buttons.
- A dedicated hydraulic circuit for the breaker ensures that the correct amount of hydraulic fluid is delivered to the attachment, providing consistent performance.
8. Safety Features
- Hydraulic breaker lines are equipped with safety features to prevent excessive pressure buildup, which could damage the system or cause failure. Pressure relief valves are typically included to release excess pressure if necessary.
- The lines are designed to withstand the tough conditions of heavy construction and demolition work, resisting abrasion, pressure surges, and environmental factors such as temperature extremes.
9. Maintenance
- Regular inspection of the hydraulic breaker line tube is essential for safe and efficient operation. Maintenance tasks include:
- Inspecting for Leaks: Hydraulic lines should be regularly inspected for any signs of leaks, cracks, or damage that could compromise the system.
- Checking Connections: Fittings and connectors should be checked for tightness and integrity to ensure there are no loose or damaged components.
- Replacing Worn Tubes or Hoses: Over time, hydraulic lines may wear out due to the high pressures and harsh working conditions. Worn or damaged lines should be replaced to avoid failure.
- Cleaning the System: Keeping the hydraulic system clean and free from debris helps maintain efficient fluid flow and prevents contaminants from damaging the breaker line or other components.
10. Compatibility with Attachments
- The hydraulic breaker line is specifically designed to work with hydraulic breaker attachments, but it may also be used with other hydraulic-powered tools or attachments, such as crushers or grapples, depending on the excavator’s configuration.
- Some excavators come with an auxiliary hydraulic circuit that allows easy switching between different attachments without the need for major modifications.
Function:
The Hydraulic Breaker Line Tube serves several essential functions:
- Hydraulic Fluid Transfer: It delivers high-pressure hydraulic fluid from the excavator’s main hydraulic system to the hydraulic breaker attachment.
- Attachment Power Supply: It powers the hydraulic breaker, allowing the attachment to generate the necessary force to break through materials like rock, concrete, or asphalt.
- Control of Hydraulic Functions: The breaker line, through its valves and control system, allows the operator to manage the power and impact of the breaker, ensuring precision and efficiency.
Benefits:
- Efficient Power Transmission: The breaker line provides a reliable and efficient method for transmitting hydraulic power from the excavator to the attachment, ensuring high productivity during demolition or breaking operations.
- Durability: Constructed from high-strength materials, the breaker line is designed to withstand the harsh conditions and high pressures required for heavy-duty work.
- Safety: Safety features like pressure relief valves and reinforced tubing ensure that the system operates safely, even under extreme conditions.
- Flexibility: The breaker line can be used with a variety of hydraulic attachments, making the excavator versatile and adaptable to different tasks.
Importance:
The Hydraulic Breaker Line Tube is a vital component of the Komatsu PC200LC-8M0 excavator’s hydraulic system, allowing it to effectively operate heavy-duty attachments such as hydraulic breakers. Proper maintenance and inspection of the hydraulic breaker line ensure safe, reliable, and efficient operation, helping the excavator perform challenging tasks like demolition, rock breaking, and concrete removal with ease.