Design method of turning track for rail-operated hoisting and transporting machinery based on clothoid curve
A technology of hoisting and transportation machinery and clothoid curves, which is applied in the field of track design of multi-wheel operating mechanisms, and can solve problems such as rail jamming, restriction of track passability, loss of machinery and track infrastructure, etc.
Active Publication Date: 2019-05-07
SHANGHAI MARITIME UNIVERSITY
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Problems solved by technology
[0002] Rail-operated lifting and transportation machinery need to pass through the turning track in some cases. Due to the limited wheel-rail clearance, especially when the number of wheels in the operating mechanism is large, dangerous situations such as rail gnawing and rail jamming are prone to occur. large damage to facilities
In the traditional design, the design method of concentric circle track is adopted. The adjustable track design parameter is only the turning radius, which greatly limits the passability of the track. Too small or too large turning radius is not suitable. When running on the track, it is always biased towards the inner side, and the inner and outer wheel-rail gaps are not fully utilized, resulting in serious wear on the inner side
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[0075] The invention relates to a method for designing a turning track based on a clothoid curve, which is suitable for rail-operated hoisting and transporting machinery with a rectangular rigid vehicle frame, and a group of operating mechanisms are provided under each frame corner.
[0076] Such as figure 1 As shown, the method for designing the turning track of the tracked lifting and transport machinery based on the clothoid curve of the present invention includes: inputting the first-level parameters; inputting the second-level parameters; calculating the parameters required for track design; calculating the offset and Judge whether to modify the parameters; design single-wheel track; design multi-wheel track; finally calculate the wheel-rail clearance of the track and judge whether to modify the parameters; symmetrical track points and output the final result. Each step will be described in detail later; in order to reduce the amount of calculation, only half of the angle...
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The invention relates to a tracked-running crane transportation machinery turning track design method based on clothoid. The method includes the steps of inputting turning requirements and first-levelparameters correlative to a whole machine body; inputting second-level parameters correlative to a running mechanism assembly, wheels and a track; determining the radius of an arc section of an innerside track body and the arc length parameter of a clothoid section through optimization; according to initial parameters, calculating the functions of the inner side track body and the trail of an outer side track body, when a running mechanism of the optimized track consisting of the inner side track body and the outer side track body is formed by a single; as for the situation that the runningmechanism is formed by multiple wheels, according to the quantity of multilevel balancing girders connected with wheel base modules, calculating a multiwheel modification value in a linear superposition mode and conducting modification level by level; after symmetric treatment is conducted on a practical wheeltrack gap, smaller than a theoretical wheeltrack gap, of a final track, outputting the track; otherwise, modifying the initial parameters and carrying out the track design again. By adopting the design method, the flexibility of the track design is greatly improved, and meanwhile, the workload of the design is reduced.
Description
technical field [0001] The invention is suitable for rail-operated hoisting and transportation machinery, and relates to a rail design method of a multi-wheel running mechanism, which has great flexibility and practicability. Background technique [0002] Rail-operated lifting and transportation machinery need to pass through the turning track in some cases. Due to the limited wheel-rail clearance, especially when the number of wheels in the operating mechanism is large, dangerous situations such as rail gnawing and rail jamming are prone to occur. The facility caused great damage. In the traditional design, the design method of concentric circle track is adopted. The adjustable track design parameter is only the turning radius, which greatly limits the passability of the track. Too small or too large turning radius is not suitable. When running on the track, it is always biased towards the inner side, and the inner and outer wheel-rail gaps are not fully utilized, resultin...
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IPC IPC(8): E01B23/10
CPCE01B23/10E01B2204/15
Inventor 董达善乔榛孙友刚陈佳亮韩灿徐超
Owner SHANGHAI MARITIME UNIVERSITY