Rolling Ring Shrink Fitting with Automatic Alignment and Sleeving

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Solution Overview

Problem

Existing rolling ring shrink fitting tools for rotary equipment face challenges in achieving automatic positioning and alignment, requiring manual labor and risking operator safety due to the need for manual control of a lifting mechanism for thermal expansion and cold contraction processes.

Innovation Solution

A rolling ring shrink fitting tool with a lifting frame, motorized gear systems, and adjustable components that allow for automatic positioning and alignment, including tooth rings, supporting plates, and push mechanisms to facilitate precise and safe automatic sleeving of the rolling ring onto the rotary equipment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual control of lifting mechanism is used for shrink fitting, then the rolling ring can be heated and positioned, but operator safety is at risk and time and labor are wasted

Engineering Contradiction:

Improvemanual control convenienceVSAvoidoperator safety

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces the manual mechanical control system with an automated control system. The lifting mechanism is controlled by a control device that automatically coordinates the lifting, positioning, and shrinking operations, eliminating the need for operators to manually handle the hot rolling ring while maintaining precise control over the process.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system enables self-service operation where the shrink fitting tool automatically performs the shrink fitting process. The control device manages the entire sequence of operations including lifting the heated rolling ring, positioning it on the rotary equipment, and controlling the shrinking process without requiring continuous manual intervention, thereby improving safety and efficiency.

Inventive Principle:

Principle #25Self-service

2Ease of operation

If multiple operators manually push the rolling ring during shrink fitting, then the rolling ring can be positioned, but time and labor are wasted and alignment precision is reduced

Engineering Contradiction:

Improvemanual pushing capabilityVSAvoidalignment precision

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent replaces manual pushing with an automated pushing mechanism. The lifting mechanism, controlled by the control device, automatically pushes the heated rolling ring onto the rotary equipment with precise force and positioning control, eliminating the need for multiple operators to manually push and significantly improving alignment precision.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If the rolling ring is heated for thermal expansion, then the inner diameter increases for easier sleeving, but the positioning and alignment becomes more difficult

Engineering Contradiction:

Improvesleeving capabilityVSAvoidpositioning precision

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent uses an automated control system to manage the positioning of the heated rolling ring. The control device coordinates the lifting mechanism to precisely position the thermally expanded rolling ring onto the rotary equipment, maintaining high positioning precision despite the thermal expansion that makes manual handling difficult.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 automatic and precise positioning and sleeving of rolling rings with different diameters, reducing manual labor and safety risks, while ensuring accurate alignment and reducing clearance between the rolling ring and base plates through thermal expansion and contraction.

Implementation Method 1

Most of the existing technologies use a principle of thermal expansion and cold contraction to heat the rolling ring, so that the inner diameter of the rolling ring increases

Methodology Applied

Scientific EffectThermal expansion: Thermal Expansion

Implementation Method 2

Most of the existing technologies use a principle of thermal expansion and cold contraction to heat the rolling ring

Methodology Applied

Scientific EffectThermal contraction: Thermal Contraction

Data Source

PatentUS20240091892A1Rolling ring shrink fitting tool for rotary equipment

Publication Date: 2024.03.21 CHINA CONSTR EQUIP & ENG CO LTD

AI summary

The present disclosure discloses a rolling ring shrink fitting tool for rotary equipment, including a lifting frame; a movement slot is formed in a bottom surface of a top of the lifting frame; an output end of a first motor is connected with a main gear; guide rollers are embedded in a lifting seat through bearings; shrink fitting plates are two semicircular structures; lifting lugs are welded on outer sides of the shrink fitting plates; tooth rings are arranged outside the shrink fitting plates; stop rods are fixed on inner walls of the tooth rings; supporting screw rods are embedded at sunken positions on inner walls of the shrink fitting plates through bearings.