Method for measuring and positioning error space of module structure assembly
A module structure and error technology, which is applied in the field of measurement and positioning of module structure assembly error space, can solve the problems of reducing efficiency, increasing manufacturing cost, and increasing workload, so as to reduce workload and manufacturing cost, improve manufacturing efficiency, reduce The effect of repeated lifting times
Inactive Publication Date: 2013-09-18
BOMESC OFFSHORE ENG CO LTD
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Problems solved by technology
During the construction of the module, due to the manufacturing error of the upper and lower decks, the installation of the upper decks does not meet the technical requirements, so it must be hoisted repeatedly and the errors of the decks must be corrected until the requirements are met. This operation not only increases the workload, but also increases Increased manufacturing costs and greatly reduced efficiency
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Embodiment 1
[0033] Step 1: Measure the coordinates of the control points for measuring the short column of the deck plate on the manufacturing station.
[0034] Set a measuring point at the upper and lower ends of the center line of each short column of the deck sheet, and use a total station to measure the spatial coordinates of each measuring point at the manufacturing position. [ux i ,uy i ,uz i ], [dx i ,dy i ,dz i ] are the spatial coordinates of the measurement points of the upper and lower ends of the i-th short column at the manufacturing position, respectively.
[0035] The measurement of the control point of the short column of the deck is shown in Figure 1, in which: 1 - the measurement point at the upper end of the short column; 2 - the measurement point at the lower end of the short column; 3 - the center line of the short column.
[0036] Step 2: Match the coordinates of the manufacturing station measurement control points to the overall installation coordinate system ...
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The invention discloses a method for measuring and positioning error space of a module structure assembly. The method includes (1), setting upper and lower measuring control points on each short upright column of each deck plate; (2), measuring coordinates of the measuring control points of each short upright column of the corresponding deck plate on a manufacturing station; (3), matching the coordinates of the measuring control points of each manufacturing station to an integral module mounting coordinate system; (4), using offset of the center line of each short upright column on the corresponding deck plate as an optimization objective, judging critical erroneous short upright columns and repairing the critical erroneous short upright columns. The method has the advantage that the deck plates do not need to be repeatedly hoisted when the mounting precision of the deck plates does not meet requirements.
Description
technical field [0001] The invention relates to a measurement and positioning method, in particular to a measurement and positioning method for a module structure assembly error space. Background technique [0002] The frame structure of the upper platform block of the offshore steel structure is a typical large-scale multi-layer steel structure, which is mainly composed of deck sheets, interlayer columns, diagonal reinforcements and accessories. The large-scale multi-layer steel structure adopts layered prefabricated deck sheets and interlayer columns, and then the deck sheets and interlayer columns are welded and assembled in sequence. During the construction of the module, due to the manufacturing error of the upper and lower decks, the installation of the upper decks does not meet the technical requirements, so it must be hoisted repeatedly and the errors of the decks must be corrected until the requirements are met. This operation not only increases the workload, but al...
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IPC IPC(8): G01B5/00
Inventor 汤夕春师莎莎邵庆阳刘鸿雁潘志广
Owner BOMESC OFFSHORE ENG CO LTD