Adjustable Gas Spring Lifting Table Frame for Stable Speed Control
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Solution Overview
Problem
Conventional lifting tables, including pneumatic ones, face issues with unstable lifting/lowering speeds, safety concerns due to varying load conditions, and inefficiencies such as energy waste and noise, especially when manually or electrically operated.
Innovation Solution
A pneumatic lifting table frame equipped with a pressure sensor, controller, and an adjustable gas spring assembly that adjusts gas pressure based on load conditions to maintain consistent lifting/lowering speeds, ensuring safety and efficiency by controlling the piston rod assembly within a gas reservoir and drive unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a gas spring is used to actuate the lifting table, then the cost is reduced and noise is lowered, but the lifting/lowering speed becomes unsteady and safety is compromised
Solution Approach 1:
The gas spring is transformed from a static component to a dynamic one by adding a variable area valve that can adjust the gas flow rate in real-time based on load conditions, enabling the lifting speed to be controlled and stabilized dynamically
Solution Approach 2:
The valve area is changed as a controllable parameter to regulate gas flow rate, allowing the system to adapt to different load conditions and maintain stable lifting/lowering speeds across varying weights
2Object-generated harmful factors
If a gas spring is used to actuate the lifting table, then the cost is reduced and noise is lowered, but the lifting process becomes unsafe under heavy or light loads
Solution Approach 1:
A load sensor detects the actual load on the lifting table and provides feedback to the control unit, which then adjusts the valve area accordingly to maintain safe and controlled lifting/lowering speeds under varying load conditions
Solution Approach 2:
The purely mechanical gas spring system is replaced with a controlled system that uses electronic sensing and actuation to regulate gas flow, enabling precise control over lifting/lowering speeds and improving safety
3Object-generated harmful factors
If manual operation is used for the lifting table, then cost is reduced, but the operation becomes strenuous and prone to deformation and damage
Solution Approach 1:
The system uses the load itself to trigger the adjustment mechanism - the load sensor automatically detects weight changes and the control unit automatically adjusts the valve area, eliminating the need for manual intervention while keeping costs low
4Speed
If electric actuation is used for the lifting table, then lifting speed control is improved, but energy consumption increases and noise is generated
Solution Approach 1:
The system uses pneumatic control through the variable area valve to regulate gas flow from the gas spring, achieving lifting speed control without requiring electric motors or continuous power supply, thus reducing energy consumption and noise
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 solution provides a stable and safe lifting/lowering process across varying loads, enhances comfort and service life, reduces energy consumption, and minimizes damage risk while maintaining constant gas quantity through a sealing connection, thus offering improved practicality and cost-effectiveness.
Implementation Method 1
The adjustable gas spring body (401) is connected to the gas reservoir (402) via a gas pipe (405)... gas is allowed to communicate between their insides... the gas in the gas reservoir (402) is partially pressed into the adjustable gas spring body (401), which increases the pressure in the adjustable gas spring body
Implementation Method 2
a pressure sensor configured to detect a load of the lifting table frame
Data Source
AI summary
A pneumatic lifting table frame includes a transverse beam, at least one column, a pressure sensor that detects a load of the lifting table frame, a controller configured to receive a signal from the pressure sensor, and an adjustable gas spring assembly configured to drive the column to be lifted or lowered. The adjustable gas spring assembly includes an adjustable gas spring body, a gas reservoir, a piston rod assembly, and a drive unit. The adjustable gas spring body is connected to the gas reservoir via a gas pipe. The controller is configured to control the drive unit, the adjustable gas spring body (401) is disposed in one of the column, and the drive unit drives the piston rod assembly to carry out a piston motion in the gas reservoir.