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Common Problems and Solutions for Hoist Sheave Units
Release time :
07 Nov,2025
Source:
The head sheave assembly of a multi-rope friction hoist mainly consists of the head sheave shaft, fixed sheave, traveling sheave, bearing bushing, bearing housing, main bearing, head sheave lining, and retaining clips.
The head sheave assembly of a multi-rope friction hoist mainly consists of the head sheave shaft, fixed sheave, traveling sheave, bearing bushings, bearing housings, main bearings, head sheave lining, and retaining clips. Among these components, the fixed sheave is connected to the head sheave shaft via a flat key, while the inner bore of the traveling sheave is fitted with bearing bushings, which are secured to the traveling sheave by bolts. The primary function of the head sheave assembly is to provide support and guidance for the hoisting steel wire ropes, thereby ensuring the smoothness and safety of the hoisting process.
Common Issues with the Sky Wheel Device
1. The sky wheel device emits abnormal noises during operation.
Reason: Unusual noises from the sheave are typically caused by a variety of factors, including stress-relief processes in the sheave assembly, damage to the sheave bearings, and inadequate lubrication of the bearing bushings.
Handling method: Unusual noises usually gradually diminish over time with continued use. In cases of bearing damage, check the lubrication condition of the bearings, replace any damaged bearings, and strengthen lubrication management.
2. The bearing bush or the surface of the sheave shaft shows severe wear marks.
Reasons: The wear of bearing bushings is mainly caused by factors such as poor lubrication, unbalanced wire rope tension, and deviation of the lifting centerline. Wear on the sheave shaft is often due to the excessively hard material of the bearing bushings.
Handling measures: Procure bearing bushings of superior quality. Strengthen lubrication management to ensure the cleanliness and proper quantity of grease. Regularly inspect the tension of wire ropes and promptly adjust any imbalances. Additionally, adjust the installation position of the hoist or reinforce the derrick to ensure the accuracy of the hoisting centerline.
3. The spokes of the sky wheel assembly have cracked.
Reason: The fracture of wheel spokes is primarily caused by factors such as insufficient weld strength in the wheel body, cumulative fatigue over long-term operation, and intense friction generated during emergency braking.
Handling method: During the manufacturing process of the wheel body, ensure that the weld seams meet the required strength standards. Regularly inspect the wear condition of the weld seams and promptly repair any cracked weld seams.
4. The top pulley lining shows uneven wear, and the depth of the rope groove is inconsistent.
Cause: It is caused by factors such as uneven tension in the steel wire rope, insufficient accuracy of the groove, and issues with the lining material.
Handling method: Regularly check the tension of the wire rope and promptly adjust any imbalances. Ensure consistent groove depth by improving the accuracy of the hoist sheave. Regarding the lining material, select a lining material with excellent wear resistance.
5. Excessive deviation in the swivel of the sky wheel
Cause: Due to severe wear of the sheave bearing, bending of the main shaft, and damage to the bearings.
Handling method: Replace severely worn bearing shells and bearings, and straighten the bent main shaft. Regarding the installation position of the head sheave assembly, ensure that its horizontal and vertical alignment meet the required specifications.
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Product Features of Hebi Shuangmin Mine Hoist
The mine signaling system, composed of sensors, controllers, and communication devices, is a monitoring system that enables real-time monitoring and control of data related to the underground mine environment and equipment operation.
Composition and Installation of the Derrick
The mine signaling system, composed of sensors, controllers, and communication devices, is a monitoring system that enables real-time monitoring and control of data related to the underground mine environment and equipment operation.
The Importance of Mine Signal Systems
The mine signaling system, composed of sensors, controllers, and communication devices, is a monitoring system that enables real-time monitoring and control of data related to the underground mine environment and equipment operation.
Characteristics of multi-rope friction hoists
Mine hoists are primarily used in mines to lift and lower personnel, materials, and equipment. They can transport heavy loads quickly and steadily in the vertical direction, significantly improving the efficiency of coal mining operations.
Technical Features and Maintenance Management of Mine Hoists
Mine hoists are primarily used in mines to lift and lower personnel, materials, and equipment. They can transport heavy loads quickly and steadily in the vertical direction, significantly improving the efficiency of coal mining operations.
Maintenance and Management of the Sky Wheel Device
Select an appropriate grease, such as lithium-based grease No. 2 or No. 3, and ensure that the grease is clean and applied in the correct amount. Regularly inspect the cleanliness and lubrication performance of the grease, and promptly replace any grease that has deteriorated.
Common Problems and Solutions for Hoist Sheave Units
The head sheave assembly of a multi-rope friction hoist mainly consists of the head sheave shaft, fixed sheave, traveling sheave, bearing bushing, bearing housing, main bearing, head sheave lining, and retaining clips.
The Importance of Mine Hoisting Equipment
Mine hoisting equipment serves as an essential link between the underground and surface of a mine. In underground mining operations, large quantities of ore, waste rock, and other materials need to be hoisted to the surface for processing; at the same time, miners rely on this hoisting equipment to safely travel back and forth between the underground and the surface.
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