Tandem Linear Drive Gate Operator Eliminates Hydraulic Leaks
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Solution Overview
Problem
Existing gate operators face challenges in providing sufficient power while maintaining a compact size, as hydraulic systems are costly and prone to leaks, and gear arrangements are expensive and difficult to service, leading to performance limitations and imprecise gate movement.
Innovation Solution
A barrier apparatus using linear drives with motor-activated screw shafts or pulley systems, where traveler mechanisms coupled to connecting arms reciprocate the gate between open and closed positions, eliminating hydraulic components and complex gearing, thus reducing costs and improving precision and power delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If hydraulic systems are used to provide sufficient power for gate movement, then the power and force capability is improved, but the manufacturing cost increases and reliability deteriorates due to leaks and maintenance issues
Solution Approach 1:
The patent replaces the hydraulic mechanical system with an electric motor-driven linear drive system. The motor rotates a screw shaft that converts rotational motion to linear motion of the traveler mechanism, eliminating hydraulic fluid, hoses, and seals that are prone to leaks and failures. This substitution maintains sufficient power capability while dramatically improving reliability.
2Power
If hydraulic systems are used to provide sufficient power, then the power capability is improved, but the manufacturing cost increases due to expensive hydraulic components
Solution Approach 1:
The patent substitutes complex hydraulic components (pumps, valves, hoses, seals) with simpler electric motor and screw drive components. The motor and screw shaft are standard, easily manufactured parts that eliminate the need for expensive hydraulic system assembly and specialized components, thereby reducing manufacturing costs while maintaining power capability.
3Power
If gear arrangements are used to provide power transmission, then the power transmission capability is improved, but the device complexity increases and ease of repair deteriorates
Solution Approach 1:
The patent extracts and eliminates the complex gear transmission stages from the power transmission system. Instead of using multiple gear reductions, the design directly couples the motor to the screw shaft, which provides the necessary mechanical advantage through its threaded geometry. This simplification reduces device complexity and makes the system easier to service and repair.
4Ease of operation
If traditional gate operators are used, then the basic gate movement function is achieved, but the measurement precision and smoothness of gate positioning deteriorates due to hopping and jerking
Solution Approach 1:
The patent replaces traditional gear-driven or hydraulic mechanical systems with a motor-driven screw mechanism. The screw shaft provides continuous, controlled linear motion to the traveler mechanism, which smoothly reciprocates the gate between open and closed positions. This eliminates the hopping and jerking characteristic of gear systems, achieving smooth operation and precise positioning.
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 reduces manufacturing and maintenance costs, enhances performance by minimizing component failures and 'arm hop', and allows for precise and smooth gate movement, balancing power and compactness for confined spaces.
Implementation Method 1
one or more screw shafts having male helical threads threadably engaged to one or more traveler mechanisms with female threads where a motor rotates the one or more shafts which move the traveler mechanisms
Data Source
AI summary
A barrier apparatus and method are provided to reciprocate a gate or barrier between an open or closed position with one or more linear drives having one or more traveler mechanisms where at least one motor rotates the one or more shafts and moves the traveler mechanisms to move the barrier. The moving traveler mechanisms are coupled to one or more connecting arms which are coupled to the gate and the movement traveler mechanisms push and pull the arms which in turn push and pull the barrier to reciprocate the barrier between and open and closed position. The gate may be rotated and reciprocated around a horizontal axis from a generally vertical position (i.e., generally perpendicular to the ground where access to a controlled area is open) to a generally horizontal position (i.e., generally parallel to the ground where the gate extends across the entryway to the controlled area).