Self-Erecting Auxiliary Boom for Mobile Cranes
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Solution Overview
Problem
The current method for erecting and dismantling auxiliary booms on mobile cranes is hazardous and inefficient, requiring an additional crane and involving crane operators to work at elevated heights.
Innovation Solution
An adjustable jib system is attached to the main boom via an adapter, with luffing supports connected by a traction link train, allowing for sequential setup and dismantling using a single crane, reducing the need for additional equipment and enhancing safety by minimizing operator exposure to risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an additional crane is used to erect and dismantle the auxiliary boom, then the auxiliary boom can be erected and dismantled, but the device complexity increases and the operation becomes more hazardous
Solution Approach 1:
The auxiliary boom system is designed to be self-erecting and self-dismantling through a mechanical lifting mechanism. The lifting mechanism includes a chain block, chain, and linkage system that automatically raises and lowers the auxiliary boom without requiring an additional crane or manual handling operations.
Solution Approach 2:
The invention merges the functions of multiple separate operations into a single integrated lifting mechanism. The chain block, chain, and linkage system combine the lifting, positioning, and securing functions that would otherwise require separate cranes and manual operations, thereby reducing device complexity while maintaining operational capability.
2Ease of operation
If the crane operator works on the luffing support at elevated heights, then the auxiliary boom can be erected, but the safety risk increases
Solution Approach 1:
The lifting mechanism automatically performs the lifting and positioning operations without requiring the crane operator to manually handle or work on the luffing support at elevated heights. The chain block and linkage system self-contained mechanism handles all critical operations from the ground level, eliminating the safety risk of manual high-altitude work.
3Ease of operation
If manual handling is used to guide the luffing support, then the auxiliary boom can be positioned, but the time required for erection and dismantling increases
Solution Approach 1:
The chain block and chain system automatically performs the lifting and positioning of the luffing support without requiring manual guiding. The mechanical system self-contained mechanism handles all critical operations from the ground level, eliminating the safety risk of manual high-altitude work.
Solution Approach 2:
The invention replaces manual mechanical handling with an automated lifting mechanism. The chain block, chain, and linkage system substitute for manual operations, enabling faster and safer positioning of the auxiliary boom while reducing the time required for erection and dismantling.
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
Facilitates quicker and safer erection and dismantling of jibs by eliminating the need for a second crane and reducing operator risk through a controlled, mechanized process.
Implementation Method 1
By winding the hoist rope (14) onto the hoist (15), the luffing supports (8, 9) are now set up
Implementation Method 2
The pulley (19) is excited
Data Source
Figure 1
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Figure 3
AI summary
The invention relates to an auxiliary device for equipping the main boom (5) of a mobile crane with an auxiliary boom (3), wherein a support (8, 9) is mounted near the head of the main boom, by means of which the lifting cable (14) of the main boom may be run to a connection point on the auxiliary boom. The invention further relates to a method for equipping with an auxiliary boom.