Telescopic Crane Self-Fittable Bracing Device
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Solution Overview
Problem
The existing guying systems for telescopic cranes are large, heavy, and require additional lifting gear for installation, making them expensive, labor-intensive, and time-consuming, especially for larger mobile cranes, where precise positioning is complicated and often violates height and weight restrictions.
Innovation Solution
A self-assembly guying unit system for telescopic cranes with an erectable boom and holding frame that allows for low-profile mounting, featuring a positioning unit for defined relative positioning of the boom and guying unit, eliminating the need for separate hoisting and simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the guying unit is provided as an integral unit for larger mobile cranes, then the load capacity and stability are improved, but the weight and height increase making it impossible to transport and install without additional lifting gear
Solution Approach 1:
The boom is divided into an outer boom base part and inner boom telescopic parts that can be independently handled. The holding frame is designed to receive the boom assembly section, allowing the boom to be engaged separately without requiring the entire guying unit to be hoisted as one heavy assembly.
Solution Approach 2:
The holding frame is designed with a cross section that opens upwards, changing the traditional side-opening configuration. This allows the boom to be engaged from above by simply lowering it into the holding frame, eliminating the need for complex side-by-side positioning and additional lifting gear.
2Stability of the object's composition
If the guying unit is provided as an integral unit, then the structural stability is improved, but the device complexity for positioning and assembly increases
Solution Approach 1:
The boom serves its dual function of both supporting the crane structure and positioning itself into the holding frame. By lowering the boom assembly section into the upwardly opening holding frame, the boom itself performs the positioning action, eliminating the need for complex external positioning devices.
Solution Approach 2:
The holding frame is pre-positioned on the outer boom base part at a defined point before the boom telescopic parts are assembled. This preliminary positioning of the holding frame simplifies the subsequent assembly process, as the boom assembly section simply needs to be lowered into the already-positioned holding frame.
3Ease of operation
If the holding frame is designed with upwardly opening cross section, then the ease of assembly is improved, but the stability during transport may be compromised
Solution Approach 1:
The auxiliary supports are designed to be removable, allowing the guying unit to transition between different operational states. During transport, the auxiliary supports are installed to provide stability. During assembly, they are removed to allow the boom to be engaged from above into the upwardly opening holding frame.
4Ease of operation
If the guying unit is positioned low for easy access, then the ease of operation is improved, but the height restrictions for transport must be strictly complied with
Solution Approach 1:
Instead of having the holding frame open sideways and requiring the boom to be positioned horizontally next to it, the holding frame is inverted to open upwards. This allows the boom to be engaged vertically from above by simply lowering it into the holding frame, achieving both low profile and ease of operation.
Data Source
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AI summary
The invention relates to a telescopic crane guying unit system comprising a telescopic crane, in particular a mobile crane, with a chassis (1) and a rotatably arranged superstructure (2) on which an erectable boom (3) is arranged, which has an outer boom base section (4) and one or more boom telescopic sections (5), and with a guying unit (9) mountable on the boom (3), which has erectable guying supports (11) and a retaining frame (10) for attachment to the boom (3), wherein the erecting supports (11) are connected to form a unit by the retaining frame (10), and wherein the retaining frame (10) has an upwardly opening cross-section which allows the boom (3) to be inserted or engaged at its open point.It also relates to a method for mounting a bracing unit (9) on the boom (3) of a telescopic crane, in which the bracing unit is positioned at a defined location with the lifting device (30) provided on the boom (3), at which the boom (3) can engage in a retaining frame (10) of the bracing unit (9) by moving the boom, the bracing unit (9) is detached from the lifting device (30), the boom (3) is moved to a bracing unit mounting length if this length has not yet been reached after positioning the bracing unit, and in which the boom is moved to establish the engagement of the bracing unit (3) in the retaining frame (10), being inserted from above into an upwardly opening cross-section of the retaining frame (10).