Erection device and control method for box girder with large length-to-diameter ratio
A technology with a large length-to-diameter ratio and a control method, which is applied in the direction of lifting devices, fluid pressure actuation devices, fluid pressure actuation system components, etc., can solve problems such as poor positioning accuracy, low response speed, and unstable operation, etc. Fast vertical speed, high positioning accuracy, and good fitability
Active Publication Date: 2022-03-29
NAVAL UNIV OF ENG PLA
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Problems solved by technology
At present, there are no mature products in China for any position self-locking hydraulic cylinders above the second level. Single-stage self-locking hydraulic cylinders for any position are relatively mature in China, but they face many problems such as low response speed, unstable operation and poor positioning accuracy.
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[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0025] like figure 1 The erecting device for box girder with large aspect ratio is shown, including erecting bracket 1, erecting cylinder 2, two sets of micro-movement mechanisms 3, multiple sets of clamping mechanisms 4, erecting cylinder displacement sensor, horizontal displacement laser Ranging sensor 6, vertical displacement laser ranging sensor 7, mounting base 8, bracket support 5 and hydraulic pump station. The mounting base 8 is mounted on the end of the erecting bracket 1 through the pin, one end of the erecting cylinder 2 is hinged with the mounting base 8 through the pin, and the other end of the erecting cylinder 2 is connected to the middle of the erecting bracket 1 through the pin. Hinged to form a triangular support structure, the erection bracket 1 can be erected and laid flat; the middle part and the other end of the e...
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The invention discloses an erecting device and a control method for a box girder with a large aspect ratio, comprising an erecting bracket, an erecting oil cylinder, at least one set of micro-motion mechanism, multiple sets of clamping mechanisms and a mounting base; The mechanism includes a micro-movement cylinder, a push block and a guide box; the clamping mechanism includes two clamping mechanism units and a beam connecting the two clamping mechanism units, and each clamping mechanism unit includes a mounting bracket fixed on the erecting bracket. Seat, the clamping oil cylinder installed on the mounting seat and the briquetting block connected with the expansion rod of the clamping oil cylinder, and the briquetting block is hinged on the top of the mounting seat through a pin shaft. The position adjustment of the load box girder in the horizontal or vertical state is realized by using the micro-motion mechanism, and the clamping and fixing of the load box girder is realized by the clamping mechanism, which improves the suitability of the erecting device for different load box girders.
Description
technical field [0001] The invention relates to the technical field of erecting devices, in particular to an erecting device and a control method for a box girder with a large aspect ratio. Background technique [0002] Erecting devices are widely used in civil and military fields, and how to achieve large-angle and rapid erecting of large loads is one of the engineering and technical problems faced by commonly used erecting devices. Electric lift and hydraulic lift are commonly used erection solutions, and the technology is relatively mature. The high-thrust electric cylinder lifting device has high control accuracy and fast erection response, but the disadvantages are limited lifting load weight, high use cost and large installation space. Hydraulic lifting has the advantages of large lifting load and small installation space, but for large strokes, it is best to use two or three-stage self-locking hydraulic cylinders at any position. At present, there are no mature prod...
Claims
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IPC IPC(8): B66F3/24F15B21/02F15B21/08
CPCB66F3/24F15B21/02F15B21/087
Inventor 徐明进芮万智许金黎新齐廖孝兵吴延好孙文朱康敏郭鹏辉朱俊杰王玉杰李想郭威崔小鹏孙兴法
Owner NAVAL UNIV OF ENG PLA