Gyropod Sack Trolley Attachment Lever Control Mechanism
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Solution Overview
Problem
Current electric hand trucks are expensive, heavy, and unsuitable for small delivery people or occasional use, requiring manufacturer intervention for maintenance and not easily adaptable for transporting loads on uneven surfaces like ports or steep holds.
Innovation Solution
A device comprising adjustable plates and straps that securely attach a devil-type transport structure to a Segway without altering it, using rubber wedges to transfer weight and load, and a system of brake levers and cables to control the Segway's movement, allowing for easy assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing electric hand trucks are used, then electric assistance for load transport is provided, but they are expensive, heavy, and require manufacturer intervention for maintenance
Solution Approach 1:
The patent uses an intermediary mechanical system (brake levers, cables, sheaths) to control the Segway's electrical contactors, rather than directly modifying the Segway's electrical system. This intermediary mechanism allows load transport control while preserving the Segway's original electrical architecture, reducing maintenance complexity.
Solution Approach 2:
The invention segments the load transport function from the Segway's core system by adding a separate devil-type transport structure. This segmentation allows the Segway to retain its original simplicity while gaining load transport capability through an attached mechanical structure.
2Reliability
If existing electric hand trucks are used, then electric assistance is provided, but their weight around 70 kg makes them unusable by deliverers to trucks without a tailgate
Solution Approach 1:
The patent merges the Segway (weighing approximately 25-30 kg) with a lightweight devil-type transport structure, creating a combined system that is significantly lighter than traditional 70 kg electric hand trucks. This merging provides electric assistance capability while reducing overall weight for easier maneuverability.
3Adaptability or versatility
If a transport structure is attached to the Segway, then load transport capability is improved, but the Segway's intrinsic qualities may be altered
Solution Approach 1:
The patent uses pre-positioned contactor switches and predetermined cable routing that are installed before use. This preliminary setup allows the Segway to be quickly adapted for load transport without permanent modifications, preserving its intrinsic qualities while gaining versatility.
Solution Approach 2:
The cable-sheath mechanism acts as an intermediary that transmits control forces from the brake levers to the electrical contactors without requiring direct integration with the Segway's internal systems. This intermediary approach maintains the Segway's structural integrity while enabling load transport functionality.
4Ease of operation
If brake levers are used to control the Segway, then movement control is achieved, but sufficient pressure on electrical contactors requires optimized lever arm length
Solution Approach 1:
The patent optimizes the lever arm length as a critical parameter to amplify the user's input force. By carefully selecting the lever arm dimensions, the system transforms slight user pressure into sufficient contactor activation pressure, improving ease of operation without adding complex control mechanisms.
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
Enables efficient and safe transport of loads up to 80 kg on slopes, maintaining the Segway's intrinsic qualities while being lightweight, easily removable, and cost-effective, with a price ratio unmatched in the market.
Implementation Method 1
rubber wedges fixed under these plates transfer the weight and the load of the trolley to the frame of the Segway
Implementation Method 2
rubber wedges fixed under these plates transfer the weight and the load of the trolley to the frame of the Segway
Implementation Method 3
A return spring (8) returns the movable part to its initial position as soon as the brake levers are released
Implementation Method 4
actuating means (7) of each rigid part (6) controlled in rotation being constituted cables operable from the handles of the transport structure capable of exerting a traction force on the rigid part (6) to control its rotation
Data Source
AI summary
The invention relates to a device for attaching a sack trolley without wheels (2) to a gyropod (3) and for controlling the assembly by means of two levers (7) attached to the handles of the sack trolley. The device consists of two adjustable plates (1) rigidly connected to the sack trolley and strapped to the gyropod. The plates support two brackets (6) that are movable along their axis when the user exerts a force on the handles that is counter to the return springs (8), the base of the bracket pressing on the switch mechanisms of the gyropod. The user can then simply lean the assembly forwards or backwards to achieve movement. The device according to the invention is intended to facilitate the movement of loads not exceeding 120 kg on maximum 18° slopes.