Single Motor Payload Lifting Device with Cam Transmission
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Solution Overview
Problem
Conventional load transportation robots require complex power transmission structures to lift payloads, which complicates the lifting process and increases the need for multiple lifting motors, making the system cumbersome and inefficient.
Innovation Solution
A payload lifting device utilizing a single lift-driving unit with a first and second power transmission portion, each comprising cam members and lifting members that apply vertical lifting forces to the payload, allowing for stable lifting without the need for multiple motors by using a deceleration portion to transmit power from a single lifting motor to parallel rotational shafts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional power transmission structure is used to lift the payload, then the lifting function can be achieved, but the structure becomes complicated and requires multiple lifting motors
Solution Approach 1:
The patent combines multiple lifting motors and power transmission mechanisms into a single integrated power transmission system. One lifting motor drives both the first and second power transmission portions through a shared transmission mechanism, reducing the number of motors from two to one while maintaining the ability to lift the payload reliably.
Solution Approach 2:
The single lifting motor serves multiple functions by simultaneously powering both the first power transmission portion (which drives the first cam member) and the second power transmission portion (which drives the second cam member). This multi-functional design eliminates the need for separate motors for each lifting side.
2Stability of the object's composition
If multiple lifting motors are used to lift the payload, then stable lifting can be achieved, but the system becomes cumbersome and less efficient
Solution Approach 1:
The patent merges multiple lifting motors into a single lifting motor that drives both sides of the payload lifting mechanism through integrated power transmission portions. This reduces system complexity and improves efficiency while maintaining stable lifting through the coordinated action of first and second cam members that simultaneously apply upward forces.
3Device complexity
If a single lift-driving unit is used to lift the payload, then the structure is simplified, but stable lifting may be compromised
Solution Approach 1:
The patent segments the single power transmission system into two distinct power transmission portions: the first power transmission portion that drives the first cam member, and the second power transmission portion that drives the second cam member. This segmentation allows one motor to independently control both lifting sides, ensuring stable and balanced payload elevation.
Solution Approach 2:
The patent introduces intermediate transmission mechanisms (including deceleration mechanisms and gear mechanisms) that mediate between the single lifting motor and the two cam members. These intermediaries ensure that the motor's rotational force is properly distributed and synchronized to both lifting sides, maintaining stability despite using a single drive unit.
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
Simplifies the power transmission structure, enabling stable and efficient payload lifting with reduced complexity and the need for fewer lifting motors, thus enhancing the overall efficiency and compactness of the system.
Implementation Method 1
The first power transmission members may include cam members which protrude eccentrically outward from an outer circumferential surface of the first rotational and lifting members which linearly move in a vertical direction due to rotation of the cam members
Data Source
AI summary
Disclosed is a payload lifting device capable of stably lifting a payload using one lift-driving unit. In the payload lifting device including a lift-driving portion configured to vertically lift a payload, the lift-driving portion includes lift-driving units configured to generate a driving force for vertically lifting the payload, a first power transmission portion including first power transmission members which vary in vertical positions and apply a vertically lifting force to one side of a bottom of the payload when a first rotational shaft rotated by the driving force of the lift-driving units rotates, and a second power transmission portion including second power transmission members which vary in vertical positions and apply a vertical lifting force to the other side of the bottom of the payload when a second rotational shaft rotated by the driving force of the lift-driving units rotates.