Electric Hoist Rope Guide for Jam-Free Wire Rope Winding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric hoists experience issues with wire rope jamming, stacking, and tangling during rope winding, leading to reduced service life and increased operating hazards.
Innovation Solution
The electric hoist incorporates a rope guide system with a rope guide base, stationary guide roller, and reciprocating shaft, which guides the wire rope to maintain a vertical fleet angle and stable arrangement, reducing bend angles and preventing jamming, stacking, and tangling. Additionally, an electrical conductor system detects broken strands to prevent accidents and facilitate timely replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a long wire rope is stored in the wire rope drum to satisfy long-travel working conditions, then the wire rope drum capacity is increased, but the wire rope is likely to jam, stack, or tangle during winding
Solution Approach 1:
A rope guide base is introduced as an intermediary component between the wire rope drum and the wire rope. The rope guide base includes a guide roller that directs the wire rope onto the drum surface at the correct angle, preventing jamming and tangling. The rope guide base moves axially along the drum to accommodate different rope lengths while maintaining proper winding geometry.
Solution Approach 2:
The rope guide base is designed to move dynamically along the axial direction of the wire rope drum during the winding process. This dynamic adjustment allows the system to accommodate varying rope lengths and maintain optimal winding conditions, preventing the wire rope from stacking or tangling even when storing long ropes.
2Quantity of substance
If the wire rope is wound tightly to improve space utilization, then the drum capacity is increased, but the wire rope bend angle increases causing damage and reduced service life
Solution Approach 1:
The guide roller in the rope guide base acts as a mediator that maintains an appropriate bend radius for the wire rope. By positioning the guide roller at the optimal location, the system ensures the wire rope bends smoothly without excessive stress, preventing damage while still achieving tight winding for maximum drum capacity utilization.
3Ease of operation
If the wire rope fleet angle varies during winding, then the winding process is simpler, but the wire rope arrangement becomes messy causing jamming and stacking
Solution Approach 1:
The rope guide base moves dynamically in the axial direction synchronized with the drum rotation and rope winding process. This dynamic movement automatically maintains a constant fleet angle between the wire rope and the drum surface throughout the winding operation, ensuring neat and stable rope arrangement without requiring 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
The solution ensures neater and safer wire rope arrangement, reduces damage and extends service life, and enhances operational safety by preventing rope jamming and enabling prompt detection and replacement of damaged wire ropes.
Implementation Method 1
the reciprocating shaft in transmission connection with the wire rope drum; the wire rope drum brings the reciprocating shaft to rotate; the reciprocating shaft controls the rope guide base to travel reciprocatively along an axial direction of the wire rope drum
Implementation Method 2
the stationary guide roller is mounted on the housing at a position proximal to an end portion of the reciprocating shaft; the stationary guide roller leads the wire rope into the rope guide base
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Disclosed is an electric hoist, which relates to the field of electric hoists and overcomes the problems such as rope jamming, stacking, and tangling occurring to existing electric hoists during rope winding; a technical solution to solve these technical problems is mainly an electric hoist including a housing, in the housing being provided a wire rope drum configured to store a wire rope, a friction clutch drum configured to drive winding and unwinding of the wire rope, and a rope guide configured to lead the wire rope to access the wire rope drum; the rope guide includes a rope guide base, a stationary guide roller, and a reciprocating shaft in transmission connection with the wire rope drum; the wire rope drum brings the reciprocating shaft to rotate; the reciprocating shaft controls the rope guide base to travel reciprocatively along an axial direction of the wire rope drum; the stationary guide roller is mounted on the housing at a position proximal to an end portion of the reciprocating shaft; the stationary guide roller leads the wire rope into the rope guide base. The disclosure mainly serves to arrange the wire rope more neatly.