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Luzhou Libang Metal Structure Co., Ltd

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Address: Section 2, Xinyang Road, high tech Zone, Luzhou City, Sichuan Province

Website: hongfamenye.com

Luzhou Libang metal structure: a summary of grab purchasing knowledge

Date of issue: 2020-02-14 Author: Click:

The main contents of this thesis are: the design of grab horizontal displacement system; the design of self weight balance system; the design of luffing driving mechanism. The new year's Eve engine consists of electric drive, coupling shaft, transmission shaft, wheel set and other parts. Concrete pouring: before the completion of single sheet pouring, because the pressure difference between inside and outside of the pipe decreases, the depth of buried pipe is no longer limited, but negative pipe is not allowed. The rapid development of science and technology has urged the improvement of modern design and manufacturing capacity, and the fierce international market competition is increasingly dependent on the technology competition. In addition, the appearance of the electrical differential four drum ship unloader also caused a technological revolution. The design personnel can be liberated from the cumbersome routine.


Its influence is as follows: the working position of the grab can be realized through the change of the process range; the working scale of the crane is enlarged by the change of the process range; in addition, the coordination with the rotary sum makes the working scale form a three-dimensional annular column working space, so as to improve the working function and improve the production efficiency of the crane. The angle of the luffing system also selectively affects the function, reliability and economy of the whole gantry crane. The application of virtual prototyping technology can reduce the repetitive work in the traditional design process, reduce the R & D cost, shorten the R & D cycle, and improve the product quality. There are many types of guide walls, including precast reinforced concrete and cast-in-place reinforced concrete. In terms of the overall scheme, because of the installation form of the mechanism, it is not easy to place the compensation trolley running mechanism on the same plane with the lifting and opening / closing mechanism, resulting in the high mechanical room. This type reduces the number of external mechanisms, and makes the trolley running mechanism as a whole with the lifting and opening / closing mechanism, thus saving the space for placing and reducing the self weight.


The main content of this paper is the inner discharge type ship unloader with gate seat xsj55 As the research object, using behavioral analysis, mechanical vibration, numerical calculation theory, numerical analysis software matlab In this paper, the dynamic characteristics of the ship unloader are deeply studied by means of connecting with the dynamic simulation software ADAMS, focusing on the process of luffing behavior and grapple pinching.


Based on Lagrange equation, the mathematical model of the grab pinch system of ship unloader is established. The fourth-order Runge Kutta algorithm is used to solve the model of the grab system. The pinch characteristics of the grab system of the ship unloader are discussed through the transformation of the rope length and damping coefficient, and the characteristic curve of the grab is obtained. The software can be standardized and standardized. Table the rotation relations between motors and reels the motor turns to the hoisting drum a lifting drum B opening and closing drum a opening and closing drum B +++ o lifting motor o +++ opening and closing motor o + + L + + trolley running motor note from the lifting side, the electric power is "+" in clockwise direction, and "in anticlockwise direction".

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Related labels: Grab mechanism , Plum blossom grab , Log grab

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