Rail Tool-Holder Cart with Adjustable Spring and 360° Rotation
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Solution Overview
Problem
Existing rail tool-holder carts have limitations such as a fixed 180° angular range of the support frame, which restricts maneuverability, and a gas spring that only accurately counterbalances the weight of one type of tool, requiring manual adjustments for tools of different weights, leading to reduced ergonomic and efficient operation.
Innovation Solution
A rail tool-holder cart with a T-shaped support frame allowing 360° rotation of the tool-holder arm and a spring system that can be adjusted to compensate for the weight of various tools, enabling ergonomic and quick positioning in any work location along the rails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the support frame uses an L-shape configuration, then the cart structure is simple, but the tool-holder arm cannot rotate beyond 180° without risk of overturning
Solution Approach 1:
The support frame transitions from a static L-shape to a dynamic T-shape configuration that adapts to different operational needs. The T-shape allows the tool-holder arm to rotate freely through 360° while maintaining structural stability, resolving the contradiction between structural simplicity and rotational versatility.
2Device complexity
If the tool-holder arm is limited to 180° rotation, then the cart structure remains simple, but maneuverability and work position acquisition are slowed
Solution Approach 1:
The rotation mechanism evolves from a fixed 180° limit to a dynamic 360° rotation capability. The T-shaped support frame enables the tool-holder arm to access any position around the rail, significantly improving maneuverability and work position acquisition speed without adding complex mechanical limiting mechanisms.
3Device complexity
If the gas spring thrust is fixed for one tool type, then the spring design is simple, but manual adjustment is required for tools of different weights
Solution Approach 1:
The spring system transitions from a fixed thrust design to an adjustable thrust mechanism. The adjustment means allow the spring thrust to be dynamically modified to match different tool weights, eliminating manual compensation efforts and improving ergonomic operation while maintaining relatively simple mechanical components.
4Device complexity
If the gas spring counterbalances only one tool weight, then the spring configuration is simple, but user strain increases when using tools of different weights
Solution Approach 1:
The counterbalance system incorporates adjustable parameters through the spring adjustment mechanism. By modifying the spring thrust parameter to match different tool weights, the system maintains optimal counterbalance performance across various tools, reducing user strain and injury risk without requiring a completely different spring configuration for each tool type.
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 enhanced maneuverability and ergonomic work postures by allowing 360° rotation of the tool-holder arm and adjustable spring thrust, reducing user strain and improving operational efficiency.
Implementation Method 1
a spring exerting on the coupling interface a permanent thrust towards the upper limit position so as to compensate for at least a part of the weight of the tool
Implementation Method 2
a longitudinal beam having two opposite end portions on each of which a roller is mounted for a rolling support of the support frame at two separate points on a first rail
Data Source
AI summary
A rail tool-holder cart (1) comprises a “T”-shaped support frame (2), a tool-holder arm, (12) rotatable about a vertical axis and tiltable between an upper position and a lower position and having a coupling interface for a tool (17, 17′), a spring (19), which pushes the tool-holder arm permanently towards the upper position, so as to compensate at least one part of the weight of the tool (17, 17′), as well as adjustment means (20) for adjusting the spring thrust (19).