Segmented Balanced Support Arm for Variable-Weight Handling
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Solution Overview
Problem
Existing balanced support devices, such as those disclosed in US4387876 and US4883249, are complex and slow in adjusting to varying weights, making them unsuitable for pick and place operations, especially when dealing with loads of varying and unknown weights, and are ergonomically challenging due to the need for rotating movements that can lead to back injuries.
Innovation Solution
A balanced support device with a protruding arm comprising multiple segments and a transmission device, including pulleys and an actuator, allows for easy adjustment and movement of loads with varying weights, featuring a counterweight system and a control device that automatically adjusts the balancing force based on weight measurements, enabling intuitive and ergonomic operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an adjusting mechanism is provided to balance different weights, then the device can handle varying loads, but the device becomes complex and slow in adjusting
Solution Approach 1:
The arm mechanism is divided into multiple segments (first arm segment, second arm segment, third arm segment) that can move independently relative to each other. This segmentation allows the system to achieve weight balancing through simple relative movements of segments rather than complex adjustments of the entire mechanism, resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The invention introduces dynamic elements including a movable pivot point that can move along the axis, and segments that can move relative to each other. These dynamic components enable the system to automatically adapt to different weights through motion rather than requiring complex static adjustments, thus improving adaptability while maintaining simplicity.
2Adaptability or versatility
If the spring position is adjusted to balance different weights, then the device can handle varying loads, but the adjustment process becomes slow
Solution Approach 1:
The system performs preliminary balancing by positioning the movable pivot point and arm segments in appropriate configurations before the actual lifting operation. This preliminary configuration allows the device to be pre-adjusted to the expected weight, eliminating the need for time-consuming adjustments during pick and place operations.
Solution Approach 2:
The dynamic movement of the movable pivot point and arm segments enables rapid adjustment to different weight configurations. Instead of slowly adjusting spring positions, the system quickly reconfigures the dynamic elements to achieve the desired balance, significantly reducing adjustment time.
3Adaptability or versatility
If the device is designed for pick and place operations with varying weights, then the device becomes more versatile, but the construction becomes more complex
Solution Approach 1:
The arm mechanism is divided into multiple independent segments that can be manufactured separately and then assembled. This segmentation simplifies the manufacturing process for each individual component while providing the overall system with the versatility needed for pick and place operations with varying weights.
Solution Approach 2:
The movable pivot point and segmented arm structure serve multiple functions: they enable weight adaptation, facilitate pick and place operations, and maintain structural integrity. This multi-functionality achieves versatility without proportionally increasing construction complexity, as the same components perform multiple roles.
4Ease of operation
If the arm mechanism uses multiple segments with sliding or rolling devices, then the device becomes more ergonomic and easier to operate, but the device complexity increases
Solution Approach 1:
The arm is divided into segments that can move independently, allowing the operator to manipulate smaller, more manageable portions of the load. This segmentation improves ergonomics by distributing the operational effort across multiple simple movements rather than requiring control of a single complex mechanism.
Solution Approach 2:
The invention replaces complex mechanical adjustment mechanisms with simpler sliding or rolling devices between arm segments. This substitution maintains ease of operation while reducing overall mechanical complexity, as the sliding/rolling interfaces are simpler than traditional mechanical adjustment systems.
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 simple, reliable, and ergonomic balanced support device suitable for various applications, including pick and place operations, by allowing quick and low-force adjustments, reducing operator strain, and enabling smooth movement of loads with varying weights without the need for complex mechanisms.
Implementation Method 1
a spring which counteracts a weight of mass. These balanced support devices are indicated as 'spring balanced support devices', because the counteracting force is provided by a spring
Implementation Method 2
an assist system configured for moving a mass vertically for which the assist system comprises a support structure, pulleys one of which supports the mass, a cable operatively attached to the support structure and routed around the pulleys
Implementation Method 3
a motor device for executing movements of the carrier element
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
The present invention relates to a balanced support device, comprising: -a wagon configured to move along a wagon rail, -a frame connected to the wagon and extending over a vertical distance from the wagon, -a rail connected to the frame and a carriage (61) movably arranged on said rail, -at least one protruding arm (60) comprising a support member (18) for supporting amass(12), wherein the protruding arm is pivotably connected to the carriage, wherein the protruding arm comprises multiple segments (66, 68) which are movable relative to one another in order to allow the support member to move toward and away from the frame, wherein the support member (18) is mounted to the protruding arm (60) via a rotary connection (110a), allowing the support member including a mass (12) to be rotated, and a vertical balance system for exerting an upwards force on the carriage for counteracting a weight of the mass, the arm and the carriage,wherein the vertical balance system is constructed and arranged to control said force in order to balance masses of different weights.