Pressure-adjustable gas spring, lifting device and lifting table
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Solution Overview
Problem
Current lifting tables rely on manual adjustment of mechanical devices and hydraulic or gas pressure rods, resulting in limited smoothness and height adjustment capabilities.
Innovation Solution
A pressure-adjustable gas spring system with a gas source, adjustment device, and synchronization mechanism that allows for adjustable pressure and higher lifting heights by using a gas spring connected to a cross beam subassembly and flexible traction components, enhancing the lifting capacity and smoothness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a roller form is used on the retainer, then the structure is simple, but the smoothness is low
Solution Approach 1:
The patent replaces the traditional roller form with a sleeve form that utilizes friction-based mechanical interaction. The sleeve is sleeved on the outer tube and rotates together with it, creating friction that enhances smoothness while maintaining structural simplicity. This substitution transforms the mechanical interaction from rolling contact to friction-based rotational coupling, resolving the contradiction between smoothness and structural complexity.
2Adaptability or versatility
If manual adjustment is used for gas pressure rods, then the device complexity is low, but the height adjustment capability is limited
Solution Approach 1:
The patent introduces a pressure adjustment device that modifies the gas pressure parameter within the gas spring. By changing the pressure parameter, the lifting force and height adjustment range are enhanced. The adjustment device includes a pressure adjusting screw that compresses the gas spring to increase pressure, enabling greater height adjustment capability without significantly increasing overall device complexity.
Solution Approach 2:
The pressure adjustment device performs preliminary action by pre-compressing the gas spring through the pressure adjusting screw before the lifting operation begins. This preliminary compression stores potential energy in the gas spring, enabling the lifting mechanism to achieve greater heights and providing a range of height options rather than a fixed position.
3Length of moving object
If a single gas spring is used, then the device complexity is low, but the lifting height is not high enough
Solution Approach 1:
The patent divides the lifting function into two separate gas springs instead of using a single gas spring. Each gas spring is arranged in parallel and connected to the crossbeam and fixed tube respectively. This segmentation allows each gas spring to contribute to the overall lifting height, effectively doubling the potential lifting range while maintaining relatively simple device configuration.
4Adaptability or versatility
If the gas source volume is fixed, then the device complexity is low, but the pressure adjustment range is limited
Solution Approach 1:
The patent transforms the fixed gas source volume into a dynamic, adjustable parameter through the pressure adjustment device. The pressure adjusting screw mechanism allows the gas source volume to be dynamically changed during operation, enabling continuous pressure adjustment. This dynamic adjustment capability significantly expands the pressure range while keeping the adjustment device itself relatively simple in structure.
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 system provides improved smoothness and greater height adjustment selectivity, increasing the pressure-bearing capacity of the gas pressure rod and allowing users to inflate the pressure tube according to site conditions for enhanced lifting performance.
Implementation Method 1
a first gas spring, and also includes a gas source for adjusting a pressure
Implementation Method 2
One end of the gas source is connected with the first gas spring, and the other end of the gas source is connected with an adjustment device for adjusting the volume of the gas source
Implementation Method 3
The driving subassembly includes a screw. One end of the screw is connected with the piston, and the other end of the screw extends out of the cavity
Implementation Method 4
a piston; and one end, away from the gas source, of the piston is connected with a driving subassembly
Implementation Method 5
a first flexible traction component, where one end of the first flexible traction component is connected with the second inner fixed tube, and after the first flexible traction component is flexibly fitted to one end of the second bracket, one end of the first bracket and the other end of the first bracket
Data Source
AI summary
A pressure-adjustable gas spring includes a first gas spring and a gas source for adjusting a pressure. One end of the gas source is connected with the first gas spring and another end is connected with an adjustment device for adjusting the volume of the gas source. The adjustment device includes a cavity for accommodating the gas source and a piston. One end of the piston opposite the gas source is connected with a driving subassembly. The driving subassembly includes a screw. One end of the screw is connected with the piston and another end extends out of the cavity. A nut is arranged on the end of the screw extending out of the cavity. A connection tube is arranged outside the nut in a sleeving manner. One end of the connection tube is connected with the cavity and a rotating block is mounted at an opening of another end.