Directional Control Valve Group Wall Mounting Design
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Solution Overview
Problem
The existing directional control valves in hydraulic plants face challenges in rapid mounting and easy maintenance due to deformation issues during fixing to the oil tank wall, requiring additional plates and lengthy assembly processes, which complicates access to filter elements and increases maintenance delays.
Innovation Solution
A directional control valve group design featuring a rigid second hollow body made of aluminum, allowing for secure fixing of the first hollow body with limited deformations, enabling easy assembly and maintenance by eliminating the need for additional plates and simplifying access to filter elements through integrated conduits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the directional control valve is fixed directly to the oil tank wall, then the assembly process is simplified, but the hollow body deforms causing incorrect stem sliding and loss of fluid communication
Solution Approach 1:
A rigid support plate is introduced as an intermediary component between the directional control valve hollow body and the oil tank wall. The plate absorbs and distributes the mechanical stress from fixing, preventing deformation of the hollow body while maintaining structural integrity. This mediator allows direct fixing to the tank wall without compromising the precision of the stem sliding mechanism.
2Manufacturing precision
If additional support plates are used to prevent deformation, then stem sliding precision is maintained, but assembly time increases and maintenance becomes more difficult
Solution Approach 1:
The support plate is merged with the mounting bracket assembly, creating an integrated component that provides both structural support and mounting functionality. The bracket is designed to be fixed directly to the oil tank wall, while the support plate is integrated into the bracket structure, eliminating the need for separate fixation steps and reducing overall assembly time while maintaining precision.
3Stability of the object's composition
If the hollow body is made thicker to increase rigidity, then deformation is reduced, but the device becomes larger and heavier
Solution Approach 1:
Instead of uniformly thickening the entire hollow body, localized reinforcement ribs are added only in the critical areas where deformation occurs during fixing. These ribs increase rigidity precisely where needed (at the fixing points and along the stem guidance paths) while keeping the rest of the hollow body thin-walled, thus maintaining compactness and minimizing weight increase.
4Stability of the object's composition
If the hollow body is made thicker to increase rigidity, then deformation is reduced, but the device becomes heavier
Solution Approach 1:
Localized reinforcement ribs are added only in the critical areas where deformation occurs during fixing. These ribs increase rigidity precisely where needed (at the fixing points and along the stem guidance paths) while keeping the rest of the hollow body thin-walled, thus maintaining compactness and minimizing weight increase.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A directional control valve group (3), fixable to a wall of an oil tank (13) at an oil inlet through-hole (22) made in the wall (12) of the oil tank (13), comprising: a directional control valve (4) provided with a first hollow body (21); a housing (5) of the oil filter element (9); a second hollow body (15). The first hollow body (21) has a first planar surface (51), the second hollow body (15) has a second planar surface (52); the first hollow body (21) and the second hollow body (15) are mutually conformed so as to enable fixing the first hollow body (21) to the second hollow body (15) in such a way that the first planar surface (51) contacts the second planar surface (52) and the first hollow body (21) projects with respect to the second hollow body (15). Additionally, the group (3) comprises a housing of an air filter element (29) inserted in the second chamber (17) of the second hollow body (15) and connectable to the oil tank (13).