Combi-Angling Plate for Mobile Crane Jib Extension
Solution Overview
Problem
Existing mobile crane systems face complexity in angling the main jib extension relative to the main jib, requiring multiple force transmission points and auxiliary cylinders, especially for long slender jib systems, which complicates the angling process and increases operational difficulties.
Innovation Solution
The integration of a combi-angling plate that combines a passive mechanically limiting angling plate with a hydraulically supported angling drive, eliminating the need for additional force transmission points and allowing the angling drive to operate independently of terrain, enabling the main jib extension to be angled from a basic position to 20° or 40° without the need for a fork head offset or auxiliary cylinder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a passive mechanically limiting angling plate is used, then the maximum angling angle is limited, but additional force transmission points and auxiliary cylinders are required
Solution Approach 1:
The patent combines the passive mechanically limiting angling plate with a hydraulically supported angling drive into a single integrated combi-angling plate assembly. This merging eliminates the need for separate auxiliary cylinders and force transmission points, as the hydraulic drive is directly incorporated into the angling plate structure, thereby reducing device complexity while maintaining adaptability
Solution Approach 2:
The combi-angling plate serves multiple functions: it mechanically limits the maximum angling angle through its passive design while simultaneously providing hydraulic support for the angling drive. This multi-functionality eliminates the need for separate auxiliary systems, resolving the contradiction between adaptability and device complexity
2Ease of operation
If multiple auxiliary systems are used for angling, then the angling function is achieved, but the angling process becomes complex and operationally difficult
Solution Approach 1:
By merging the angling plate and angling drive into a single integrated assembly, the patent reduces the number of auxiliary systems that operators must manage. This integration simplifies the angling process and improves ease of operation while maintaining the necessary angling functionality
Solution Approach 2:
The patent extracts and eliminates unnecessary auxiliary systems from the angling mechanism. By removing redundant force transmission points and auxiliary cylinders, the design achieves simpler operation while maintaining full angling capability through the integrated combi-angling plate
3Device complexity
If the angling drive is integrated into the combi-angling plate, then the number of auxiliary systems is reduced, but the angling drive must operate independently of terrain
Solution Approach 1:
The integrated combi-angling plate with hydraulic drive is designed to perform multiple functions including terrain-independent operation. The hydraulic system provides sufficient force to angle the main jib extension regardless of ground conditions, making the system adaptable to various terrains while maintaining reduced device complexity
Solution Approach 2:
The patent utilizes hydraulic pressure and force parameters to enable the angling drive to operate independently of terrain. By adjusting hydraulic force parameters, the system can overcome varying ground conditions and achieve terrain-independent angling operation with the integrated combi-angling plate
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 the angling process by integrating the angling drive into the combi-angling plate, allowing the main jib extension to be angled on the ground or at the storage position, reducing the need for auxiliary systems and improving operational efficiency, especially for long slender jib systems.
Implementation Method 1
can be angled relative to the main jib about a luffing axis by means of an angling drive
Implementation Method 2
main jib which is mounted in a luffable manner thereon and can be raised by means of a luffing cylinder
Data Source
AI summary
A mobile crane having a main jib that is mounted thereupon for luffing and that can be oriented by means of a luffing cylinder, and a main jib extension that is detachably connected to a main jib head of the main jib by means of upper and lower bolts, it being possible to angle the main jib extension about a luffing axis relative to the main jib proceeding from a base position following release of the upper or lower bolts and using an angle drive, the angle drive engaging with a foot of the main jib extension, a maximum angling angle being delimited by an adjustable angling plate, and the angling plate engaging with the foot of the main jib extension and the main jib head. The angle drive may be a component of an angling plate in the form of a combi-angling plate.