Pump Crane Double Piping Rotation Prevention
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Solution Overview
Problem
Existing pump cranes for slurry wagons and trailers face limitations in flexibility and reach due to hosing constraints, requiring vehicle movement to position the pump head correctly, and suffer from loose connections and rotation issues in telescopic joints with non-circular pipes.
Innovation Solution
A pump crane with double piping using solid, circular cross-section pipes in telescopic joints to prevent rotation and facilitate tight connections, combined with a turntable and swivel for enhanced flexibility and a protected overflow pipe, allowing for easier maintenance and improved reach.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If non-circular profiled pipes are used in telescopic joints to prevent rotation, then rotation prevention is achieved, but connection tightness becomes difficult to obtain
Solution Approach 1:
The patent transitions from using a single non-circular pipe to using multiple circular pipes arranged in a specific spatial configuration. By adding the dimensional arrangement of multiple pipes, the system achieves both rotation prevention and tight connections simultaneously, as each circular pipe maintains its shape while the collective arrangement prevents rotational movement.
2Adaptability or versatility
If hosing is used to connect pump head to tank, then flexibility is reduced, but reach and positioning capability are limited
Solution Approach 1:
The patent divides the piping system into multiple rigid pipe sections connected by telescopic joints and knuckle joints. This segmentation allows each section to be relatively short and rigid for strength, while the articulated connections between segments provide the necessary flexibility and extended reach, overcoming the limitations of both single rigid pipes and flexible hoses.
3Measurement precision
If vehicle movement is used to position pump head correctly, then positioning accuracy is achieved, but time consumption increases
Solution Approach 1:
The patent implements a dynamic crane arm system with multiple degrees of freedom through knuckle joints and telescopic joints. This allows the pump head to be positioned accurately through mechanical articulation and extension rather than vehicle movement, significantly reducing the time required for positioning while maintaining high positioning accuracy.
Data Source
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Figure 3A
AI summary
A pump crane for a slurry wagon or trailer (1) is disclosed, which is mounted on the slurry wagon or trailer by means of a turntable and comprises a crane arm with a plurality of intermediate parts (12, 15, 16) connected by knuckle joints (13), piping from the turntable to a hydraulic pump head (5) arranged at the outermost end of the crane arm, means for swinging, raising, lowering, unfolding and folding the crane arm, and means for pumping slurry through the piping to or from the pump head, wherein one or more of the intermediate parts comprise telescopic joints (9) so that the length of the intermediate part(s) can be varied, the piping from the turntable to the pump head is double, and solid pipe sections forming part of the piping and having substantially circular cross-sections, constitute the supporting part of the telescopic joints. Furthermore, a slurry wagon or trailer (1) comprising such a pump crane is disclosed.