Mobile Crane Telescoping Jib Securing Unit Design
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Solution Overview
Problem
Current telescoping jib systems for mobile cranes require complex and costly secondary securing and locking units, increasing the weight and complexity of the crane, as well as the telescoping time, due to the need for additional bolting holes and dual locking mechanisms, which complicates the lengthening process of the basic telescoping jib.
Innovation Solution
A simplified securing unit with exclusively one driving bolt is used, allowing for secure lengthening of the basic telescoping jib by an additional telescoping jib, eliminating the need for a second complete securing and locking unit, and enabling manual bolting via spring bias or latching mechanism, thus reducing weight and complexity while maintaining normal telescoping functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a second complete securing and locking unit is arranged on the telescoping cylinder to enable lengthening with an additional telescoping jib, then the telescoping jib can be extended, but the weight, complexity, and telescoping time increase significantly
Solution Approach 1:
The patent divides the telescoping jib into a basic telescoping jib and a separate additional telescoping jib that can be added later. The securing and locking unit is segmented to include only the driving bolt mechanism for the additional jib, while the basic jib uses its original locking mechanism, avoiding the need for a complete second securing unit.
Solution Approach 2:
The single securing and locking unit is designed to perform multiple functions: it secures the basic telescoping jib sections during normal operation and also provides the driving bolt mechanism for securing the additional telescoping jib when attached, eliminating the need for separate securing mechanisms.
2Adaptability or versatility
If a second complete securing and locking unit is installed to support additional telescoping jib, then the jib can be lengthened, but the weight of the crane increases
Solution Approach 1:
The patent extracts only the essential driving bolt function from the complete securing and locking unit. The additional telescoping jib is secured using only the driving bolt mechanism integrated into the single securing unit, while removing unnecessary locking components that would add weight.
Solution Approach 2:
The additional telescoping jib is designed to nest within the basic telescoping jib when not in use. The securing and locking unit integrates the driving bolt mechanism within the existing structure, nesting the additional functionality without adding proportional weight.
3Adaptability or versatility
If dual locking mechanisms and additional bolting holes are added to support additional telescoping jib, then the jib can be extended, but the telescoping time increases
Solution Approach 1:
The additional telescoping jib is pre-equipped with locking bolts that can be quickly engaged with bolting brackets on the basic jib. The driving bolt mechanism is pre-positioned in the securing and locking unit, allowing for rapid attachment without requiring complex assembly during the telescoping operation.
Solution Approach 2:
The patent allows the additional telescoping jib to be attached using a simplified process that skips the complete securing and locking sequence. The driving bolt mechanism enables direct engagement without requiring the full multi-step locking procedure used for basic jib sections, reducing attachment time.
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
This solution simplifies and secures the lengthening process of the telescoping jib system, reducing the need for additional hardware and telescoping time, while allowing for efficient operation with a single securing unit, thus enhancing the mobility and efficiency of the crane.
Implementation Method 1
The securing unit (5) is designed in such a way that the at least one driving bolt (51) can be locked or unlocked automatically by means of a spring element
Implementation Method 2
an additional telescoping jib (3) which can be retracted and extended via a telescoping cylinder (4) with a securing and locking unit (6)
Implementation Method 3
The locking bolts of the further inner box are introduced into these bolting brackets in order to position the receiving inner box and the further inner box with respect to each other
Data Source
AI summary
A telescoping jib system of a mobile crane having a basic telescoping jib and an additional telescoping jib that can be retracted and extended via a telescoping cylinder with a securing and locking unit. In order to improve the telescoping jib system, it is proposed that a securing unit is arranged on a tip of the telescoping cylinder, the securing unit comprises exclusively at least one driving bolt, via which an additional telescoping jib separate from the basic telescoping jib can be retracted into the basic telescoping jib. The invention also relates to a method for lengthening a basic telescoping jib of a mobile crane by means of an additional telescoping jib to form a telescoping jib system.