Rack Store Conveyor Lifting Device Guide Frame Integration

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Solution Overview

Problem

Existing shelf storage systems face inefficiencies in conveyor vehicle movement between shelf levels, leading to excessive bending stress and maintenance needs due to suboptimal connection designs between guide rails and conveyor vehicle lifting devices.

Innovation Solution

The conveyor vehicle lifting device is connected to a guide frame via connecting elements at each shelf level, allowing for a modular structure and minimizing the distance gap between guide rails, thereby reducing bending stress and enhancing handling performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the conveyor vehicle lifting device is arranged stationary in front of the rack aisle, then the structure is simple, but the conveyor vehicle cannot move between shelf levels efficiently

Engineering Contradiction:

Improveconveyor vehicle movement between shelf levelsVSAvoidconveyor vehicle lifting device structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The conveyor vehicle lifting device is transformed from a stationary arrangement to a movable structure that can travel along the rack aisle. The lifting device now includes moving components that allow it to dynamically reposition itself to different locations along the aisle, enabling efficient vehicle transfer between multiple shelf levels at various positions rather than being fixed at one location.

Inventive Principle:

Principle #15Dynamics

2Strength

If the guide rails are not connected to the guide frame, then the structure is simpler, but excessive bending stress occurs during conveyor vehicle passage

Engineering Contradiction:

Improvebending stress resistance of guide railsVSAvoidconnection structure between guide rails and guide frame

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The guide rails are structurally integrated with the guide frame through connecting elements, merging two previously separate components into a unified load-bearing structure. This combination allows the guide frame to provide lateral support to the guide rails, distributing and reducing bending stresses during conveyor vehicle passage while maintaining structural integrity.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If the distance gap between guide rails is large, then the connection is easier, but the conveyor vehicle cannot pass shock-free

Engineering Contradiction:

Improveshock-free passage of conveyor vehicleVSAvoidconnection of guide rails to guide frame

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The distance gap between the guide rails and the guide frame is precisely controlled and reduced to a minimum value (less than 10 mm). This parameter optimization ensures that the conveyor vehicle can pass through the connection area smoothly without shocks or vibrations, while the connecting elements are designed to accommodate this tight tolerance through precise manufacturing and assembly procedures.

Inventive Principle:

Principle #35Parameter changes

4Productivity

If the conveyor vehicle moves at high speed, then the handling performance is improved, but the bending stress on guide rails increases

Engineering Contradiction:

Improvehandling performance of rack storage systemVSAvoidbending stress on guide rails and guide frame

Core Design Contradiction:

ProductivityVSStress or pressure

Solution Approach 1:

The structural integration of guide rails with the guide frame creates a rigid, unified support system capable of withstanding high dynamic loads. This merged structure provides the necessary stiffness and strength to accommodate high-speed conveyor vehicle movement while distributing bending stresses across the entire guide frame-rail assembly, enabling high handling performance without excessive stress on individual components.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP2673218B1Rack store system

Publication Date: 2016.12.21 TGW MECHANICS GMBH

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AI summary

The invention relates to a rack store system having a rack store with store racks which are arranged adjacently to one another, between which a rack aisle (8) extends from a first rack store side to a second rack store side and which have storing positions for freight in rack levels (11) which lie one above another, and having guide rails (14a, 14b) which extend in each case parallel to one another along the rack aisle (8) in the rack levels (11), and having a conveyor vehicle which can be moved along the guide rails (14a, 14b) in order to transport the freight, and having a conveyor-vehicle lifting device (6) which is arranged on one of the rack store sides for transporting the conveyor vehicle between the rack levels (11), which conveyor-vehicle lifting device (6) comprises a guide frame which extends between the lowermost rack level and the uppermost rack level and a receiving device (38) for the conveyor vehicle, which receiving device (38) can be moved vertically on said guide frame relative to the store racks. The conveyor-vehicle lifting device (6) is connected to the guide frame via connecting elements in every rack level (11) to the guide rails (14a, 14b).