Pivoting Skip Receiving Chute for Faster Shaft Sinking Emptying
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Solution Overview
Problem
Existing methods for emptying skips during shaft sinking require separate operations for filling and emptying, leading to prolonged emptying times and the need to move the hoisting rope, which complicates the process and reduces efficiency.
Innovation Solution
A chute system with a receiving element that can pivot between positions, allowing for the skip to be filled while being emptied without moving the hoisting rope, utilizing actuators like hydraulic cylinders for quick and secure connections and movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional skip emptying methods are used, then the skip can be emptied, but the emptying time is prolonged and the hoisting rope must be moved
Solution Approach 1:
The chute is made movable between a receiving position and a transport position through hydraulic actuators. This dynamic positioning allows the chute to be quickly moved into place for receiving material and then rapidly transported to the discharge location, eliminating the time-consuming manual operations of traditional fixed chute systems
Solution Approach 2:
The movable chute acts as an intermediary element between the skip and the final discharge location. It receives material from the skip at the first position and transports it to the second position, enabling seamless transfer operations without requiring hoisting rope movement or manual intervention
2Ease of operation
If separate operations for filling and emptying are used, then the process is simple, but the cycle time is prolonged
Solution Approach 1:
The system enables continuous operation by overlapping the filling and emptying cycles. While one skip is being filled at the shaft bottom, another skip can be emptied simultaneously using the movable chute. The chute's rapid positioning capability ensures that material transfer operations continue without interruption, maintaining high productivity while preserving operational simplicity
Solution Approach 2:
The chute is pre-positioned and ready to receive material before the skip arrives. The hydraulic actuators are pre-charged and ready to move the chute into the receiving position instantly, eliminating waiting time and ensuring that the material transfer operation begins immediately upon skip arrival
3Productivity
If the hoisting rope is moved for emptying, then the skip can be emptied, but the process becomes complicated
Solution Approach 1:
The material discharge function is extracted from the hoisting rope system and transferred to the independent movable chute mechanism. The chute handles all material transfer operations independently, eliminating the need to move the hoisting rope for emptying purposes. This separation simplifies the hoisting rope's function to purely vertical transport while the chute manages lateral material movement
Data Source
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AI summary
The invention relates to a device for emptying a conveying bucket of rock/soil which has been removed during the sinking of a shaft, which device comprises a chute (20) for conveying away the rock/soil (400) that has been emptied out of the conveying bucket (200, 200') and which device is movable linearly between an emptying position and a conveying-bucket transport position and a conveying-bucket emptying position by means of an actuator. According to the invention, a receiving element (30) for the conveying bucket (200, 200') is provided for establishing a holding connection between the chute (20) and the conveying bucket (200, 200'), which receiving element is arranged on the chute (20) so as to be rotatable about an axis of rotation (33). The receiving element (30) is pivotable between a receiving position (420) and an emptying position (430) by means of an actuator (34).