Integrated Sequence Valve Cylinder Layout for Simpler Hydraulic Passages
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Solution Overview
Problem
The existing sequence valve systems for cylinder devices are complex and cumbersome due to the branching of passages and placement of sequence valves on a stationary stand, leading to a complicated structure for pressure fluid supply and discharge.
Innovation Solution
A sequence valve-mounted cylinder device with a sequence valve attached to an intermediate portion of the supply and discharge passage, featuring a tubular valve case, valve seat, and check valve, allowing pressure fluid to flow only in one direction, simplifying the passage line by eliminating the need for sequence valves and dedicated passages on the stationary stand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sequence valves are provided at intermediate portions of passage lines connecting pressure fluid supply source to cylinder devices, then pressure fluid control is achieved, but the passage line structure becomes complicated and occupies wide space on stationary stand
Solution Approach 1:
The sequence valve is merged with the cylinder device by attaching it to the supply and discharge passage of the cylinder device. This integration eliminates the need for separate sequence valves at intermediate portions of passage lines, thereby simplifying the overall passage line structure while maintaining pressure fluid control functionality
Solution Approach 2:
The sequence valve is extracted from the intermediate portion of the passage line and repositioned to be attached directly to the supply and discharge passage of the cylinder device. This extraction from the complex intermediate routing and attachment to the cylinder device reduces the number of components on the stationary stand and simplifies the passage line configuration
2Adaptability or versatility
If sequence valves and dedicated passages are provided on stationary stand, then pressure fluid distribution is achieved, but the structure becomes complicated and occupies wide range
Solution Approach 1:
The sequence valve is merged with the cylinder device assembly, eliminating the need for separate dedicated passages and sequence valves on the stationary stand. This merging reduces the spatial footprint on the stationary stand while maintaining pressure fluid distribution capability
Solution Approach 2:
The sequence valve is moved from the horizontal plane of the stationary stand to be attached vertically to the supply and discharge passage of the cylinder device. This dimensional change reduces the horizontal space occupied on the stationary stand while maintaining pressure fluid distribution functionality
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 configuration simplifies the passage line, reduces pressure loss, and enhances the responsiveness of the cylinder device to valve-opening operations by directly connecting branch passages to cylinder devices, thereby streamlining the supply and discharge of pressure fluid.
Implementation Method 1
A valve member is hermetically inserted in the cylindrical hole of the valve case via a sealing member so as to be movable in an axial direction. The valve member is biased by a pressure-setting spring toward the valve seat.
Implementation Method 2
When pressure of pressure fluid supplied to a first portion of the supply and discharge passage which is close to the supply and discharge port exceeds a set pressure, a pressure-receiving portion of the valve member between the first sealed portion and the second sealed portion is pushed by the pressure fluid in the first portion of the supply and discharge passage
Implementation Method 3
A check valve is provided in the valve member. The check valve is configured not to allow pressure fluid to pass therethrough in a direction from the supply and discharge port to the actuation chamber but to allow pressure fluid to pass therethrough in a reverse direction.
Data Source
AI summary
An actuation chamber (2) provided in a housing (1) is communicatively connected to a supply and discharge port (6) via a pressurized oil supply and discharge passage (7). A valve case (11) of a sequence valve (10) is attached to an attachment hole (8) provided at an intermediate portion of the supply and discharge passage (7). A valve seat (25) is provided in a cylindrical hole (20) provided in the valve case (11). A valve member (26) is biased leftward toward the valve seat (25) by a pressure-setting spring (31). When pressure of pressurized oil supplied to a first portion of the supply and discharge passage (7) which is close to the supply and discharge port (6) exceeds a set pressure, the pressurized oil moves the valve member (26) rightward for valve opening, against the pressure-setting spring (31).