Hydraulic Forging Machine Anvil Locking Circuit
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Solution Overview
Problem
The existing hydraulic forging machines face issues with the reliability and fatigue life of hoses due to relative movement in the locking hydraulic circuit, leading to oil leakage and reduced production safety, as well as increased complexity in pipe connections.
Innovation Solution
An improved locking hydraulic circuit is implemented, where a hydraulic cylinder connected to the movable beam serves as the hydraulic power source, eliminating the need for a movably connected hose and drag chain, and using a control valve for independent oil supply, allowing synchronous movement of the oil supply circuit with the movable beam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hose with relative movement connection is used to supply pressurized oil to the locking hydraulic cylinder, then the locking function can be achieved, but the fatigue life and reliability of the hose deteriorates due to breakage and oil leakage
Solution Approach 1:
The patent extracts and eliminates the hose with relative movement connection from the system. Instead of using a hose that moves with the movable beam, the invention uses a fixed metal pipe connection that remains stationary, thereby removing the source of fatigue and reliability issues associated with the hose
Solution Approach 2:
The patent introduces a metal pipe as an intermediary element to replace the hose. The metal pipe provides a stable, fatigue-resistant connection for supplying pressurized oil to the locking hydraulic cylinder, eliminating the reliability issues of the original hose connection
2Ease of operation
If a hose connection with relative movement is used, then the locking hydraulic cylinder can be supplied with pressurized oil, but the complexity of pipe connection increases
Solution Approach 1:
The patent removes the complex drag chain and movable hose connection system, replacing it with a simple fixed metal pipe connection that eliminates the need for complex movement accommodation mechanisms
3Reliability
If a hose is used for oil supply to the locking hydraulic cylinder, then the locking function is achieved, but thermal radiation from hot working directly affects the hose life
Solution Approach 1:
The patent replaces the thermally sensitive hose with a metal pipe that has high thermal resistance. The metal pipe can withstand the thermal radiation from hot working operations, eliminating the thermal degradation issue that limits hose life
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 simplifies the oil supply circuit, enhances reliability, and improves the locking function of the upper anvil block, reducing the risk of oil leakage and increasing the machine's operational safety by eliminating the need for complex hose connections.
Implementation Method 1
a reset spring is provided within a rodless chamber of the locking hydraulic cylinder
Implementation Method 2
When pressurized oil is supplied to the locking hydraulic cylinder, a fluid pressure acts against an acting force of the reset spring in the hydraulic cylinder
Data Source
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AI summary
The present invention provides a hydraulic forging machine and a method for replacing an upper anvil block thereof. The hydraulic forging machine includes a movable beam, an upper anvil block fixedly connected to the movable beam, a locking hydraulic cylinder, a connecting pipe, a control valve provided on the connecting pipe and a hydraulic power source of the locking hydraulic cylinder that is fixedly connected to the movable beam. One end of the connecting pipe is connected to the locking hydraulic cylinder, the other end of the connecting pipe is connected to a pressurized oil chamber of the hydraulic power source of the locking hydraulic cylinder. The hydraulic power source of the locking hydraulic cylinder is a main hydraulic cylinder or a return hydraulic cylinder fixed to the movable beam. The locking hydraulic cylinder is fixedly connected to the movable beam for controlling locking and unlocking between the upper anvil block and the movable beam. Pressurized oil flows between the locking hydraulic cylinder and the pressurized oil chamber of the hydraulic power source of the locking hydraulic cylinder via the control valve and the connecting pipe. Compared to the prior art, the present invention not only allows synchronous movement of an oil supply circuit for the locking hydraulic cylinder with the movable beam and simplifies the oil supply circuit for the locking hydraulic cylinder, but also improves reliability.