Vacuum Tank Door Lifting Assembly for Uniform Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vacuum systems face challenges in efficiently opening and closing large doors on vacuum tanks, which can lead to uneven sealing and potential deformation, and require constant hydraulic pressure to maintain the door in an open position.
Innovation Solution
A door lifting mechanism comprising upper and lower linkage arms and a hydraulic cylinder, where the arms are designed to distribute closing force uniformly and engage with a socket and stub housing to latch the door securely, allowing the door to remain open without constant pressure once fully extended.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hydraulic system is used to open and close the door, then the door can be actuated, but constant hydraulic pressure is required to maintain the door in an open position
Solution Approach 1:
The door lifting mechanism uses a dynamic linkage system with multiple arms (first upper linkage arm, first lower linkage arm, second upper linkage arm, second lower linkage arm) that change configuration as the door moves from closed to open position. The hydraulic cylinder only needs to provide force during the transition, not continuously to maintain position.
Solution Approach 2:
The linkage arms are arranged to create mechanical advantage that counteracts the weight and sealing force of the door. The pivot points and arm configurations provide a counterbalancing effect that eliminates the need for continuous hydraulic pressure to hold the door open.
2Device complexity
If a simple hinge mechanism is used, then the structure is simple, but the closing force is uneven causing potential door deformation
Solution Approach 1:
The door closing force is distributed through multiple separate linkage arms rather than a single hinge point. Each linkage arm (first upper, first lower, second upper, second lower) applies force at different locations around the door periphery, ensuring uniform sealing pressure and preventing deformation.
Solution Approach 2:
Multiple linkage arms work together in coordination to provide both the mechanical advantage needed for easy operation and the distributed force application needed for uniform sealing. The combination of multiple arms achieves both simplicity and reliability.
3Reliability
If the door is held open with constant hydraulic pressure, then the door remains securely open, but operational efficiency is reduced
Solution Approach 1:
The hydraulic cylinder operates periodically only during door opening and closing transitions rather than continuously. The linkage mechanism maintains door position stability during the open state without requiring continuous hydraulic actuation, improving operational efficiency while maintaining reliability.
Solution Approach 2:
The linkage mechanism is designed to maintain the door in its open or closed position through its mechanical configuration alone, without requiring continuous external energy input. The system serves itself by using the door's own weight and the linkage geometry to maintain position stability.
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
The mechanism ensures a uniform seal around the tank's periphery, reduces the risk of door deformation, and allows the door to remain open without continuous hydraulic actuation, enhancing operational efficiency and safety.
Implementation Method 1
The hydraulic cylinder is connected to the second end of the lower linkage arm. Activation of the hydraulic cylinder causes the socket on the upper linkage arm to engage with the stub housing disposed in the lower linkage arm.
Data Source
AI summary
A vacuum system for use in excavation operations. The system uses a tank having an open end that is closed by a door. The door is opened and closed by a door lifting assembly made up of an upper linkage arm, a lower linkage arm and a hydraulic cylinder. A socket is formed in the upper linkage arm, and a shaft housing is formed in the lower linkage arm. The shaft housing engages with the socket to latch the door closed. The upper linkage arm is attached to the door at a first pivot axis and is attached to the lower linkage arm at a second pivot axis. The lower linkage arm is attached to a side of the tank at a third pivot axis. When the door is open, the second pivot axis extends below a reference plane that contains the first and third pivot axis.