Lateral High-Tip Skip Mechanism for Bulk Wagons

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Solution Overview

Problem

Existing side-tippers for emptying bulk goods from open-topped wagons require complex and costly mechanisms to lift the wagons high enough to overcome pivot points, generate excessive torsional forces, and restrict lateral access due to heavy and inefficient U-shaped designs.

Innovation Solution

A simpler design featuring a rocker intermediate piece with two pivot axes and two hydraulic cylinders acting in one plane minimizes torsional forces, allowing the wagon to tilt with reduced force requirements and enabling lateral access by eliminating the need for additional drive systems and heavy structures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the entire device is lifted high above the upper pivot point using multiple hydraulic cylinders, then the wagon can be emptied, but the device complexity and manufacturing cost increase significantly

Engineering Contradiction:

Improvewagon emptying capabilityVSAvoidtipping mechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The tipping mechanism is divided into two independent rockers: a lower rocker that pivots the wagon body, and an upper rocker that receives and positions the wagon. This segmentation eliminates the need for complex multi-cylinder systems while maintaining the wagon emptying capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of lifting the entire device high above the pivot point as in conventional designs, the invention inverts the approach by using a lower rocker that pivots upward and an upper rocker that receives the wagon at a lower elevation, thereby simplifying the overall mechanism.

Inventive Principle:

Principle #13The other way round (Inversion)

2Stability of the object's composition

If multiple hydraulic cylinders are attached to the intermediate piece, then the wagon can be stabilized, but torsional forces increase and the intermediate piece becomes less stable

Engineering Contradiction:

Improvewagon stability during tippingVSAvoidtorsional forces on intermediate piece

Core Design Contradiction:

Stability of the object's compositionVSForce

Solution Approach 1:

The stabilization function is separated from the intermediate piece and assigned to the lower rocker, which is specifically designed to handle torsional forces. The upper rocker then focuses solely on receiving and positioning the wagon, eliminating the conflicting demands on the intermediate piece.

Inventive Principle:

Principle #1Segmentation

3Stability of the object's composition

If a U-shaped receiving device is used, then the wagon can be contained during tipping, but lateral access to the wagon is restricted

Engineering Contradiction:

Improvewagon containment during tippingVSAvoidlateral access to wagon

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The receiving function is segmented from the containment function. The lower rocker provides lateral containment during tipping, while the upper rocker provides a open receiving area that allows lateral access for the side arm puller to introduce and remove wagons.

Inventive Principle:

Principle #1Segmentation

4Stability of the object's composition

If a heavy U-shaped structure is used, then the tipping frame is stable, but the swing forces and power requirements increase unnecessarily

Engineering Contradiction:

Improvetipping frame stabilityVSAvoidswing power requirements

Core Design Contradiction:

Stability of the object's compositionVSPower

Solution Approach 1:

The tipping frame is segmented into two separate rockers with distinct functions. The lower rocker handles the heavy lifting and stabilization, while the upper rocker is a lighter structure that receives the wagon. This segmentation reduces the overall weight and power requirements compared to a single heavy U-shaped structure.

Inventive Principle:

Principle #1Segmentation

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 the complexity and cost of the tipping mechanism, minimizes the force needed for tilting, and allows for easier access and unloading by eliminating the need for excessive lifting and additional drive systems, enhancing operational efficiency and safety.

Implementation Method 1

two stages lifted and swiveled with the help of four hydraulic cylinders

Methodology Applied

Scientific EffectHydraulic pressure: Hydraulic Press

Implementation Method 2

hydraulic cylinders acting in one plane on the lower arm of the swing arm

Methodology Applied

Scientific EffectPascal's law: Pascal's Law

Implementation Method 3

the center of gravity of the wagon is still considerably below the first pivoting axis of the seesaw

Methodology Applied

Scientific EffectGravity: Gravitation

Implementation Method 4

intermediate piece is designed as a simple rocker with an upper and a lower arm

Methodology Applied

Scientific EffectLeverage: Lever

Data Source

PatentEP1902985B1Lateral high-tip skip for emptying wagons

Publication Date: 2009.05.20 KRUPP FOERDERTECHNIK GMBH

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AI summary

The tipper has a rocker engaging a hinge (14) of a cylinder at a free end of a lower arm (6.2). The rocker is supported with a swivel axis (D2) in the region of an upper end of a tilting frame at a free end of an upper arm (6.1), where the upper end of the tilting frame is turned away from railway car edges (3). The rocker is supported with a hinge (16) between the hinge (14) and a swivel axis (D1) of another cylinder (12) at the lower arm, where the hinge (16) charges about the swivel axis (D2) at a hinge (17) for swiveling the tilting frame.