Cantilever-adjustable fastening shaft device
A shaft device and bearing device technology, applied in the direction of overhead lines, etc., can solve the problems of difficult overall movement, high cost of adjusting the base, and small adjustment margin, etc., and achieve the effects of convenient construction, accurate positioning, convenient operation, and simple operation
Pending Publication Date: 2018-08-03
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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Problems solved by technology
[0003] The traditional wrist-arm support device is a hook-and-loop connection, which has no coaxiality and insufficient rotational freedom. It is not easy to move as a whole when rotating, and there is a phenomenon of stagnation
The traditional wrist arm support device also has no up and down adjustment function. When installing with the reserved holes of the pillar, the installation often fails to meet the design requirements due to insufficient construction accuracy. Measures such as adding and adjusting the base are usually taken, but the cost of adjusting the base is high, and the adjustment is too much. small amount
Method used
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Embodiment Construction
[0020] The present invention will be described in detail below in combination with specific embodiments.
[0021] The present invention relates to a wrist arm adjustable fastening shaft device, which comprises a long straight sleeve 5, on which an upper mounting base 4 and a lower mounting base 7 for respectively installing a flat wrist arm and an oblique wrist arm are arranged. The straight sleeve 5 is integral with the upper mounting base 4 and the lower mounting base 7 . Long straight sleeve 5 is long and is 1195mm, is determined by the structural height of catenary suspension, and external diameter is 60mm.
[0022] The two ends of the long straight sleeve 5 are respectively provided with an upper internal thread sleeve 3 and a lower internal thread sleeve 8, and both the upper internal thread sleeve 3 and the lower internal thread sleeve 8 are provided with a bearing device 2; The barrel 5 and the lower inner threaded sleeve 8 are provided with long threaded bolts 1 to e...
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The invention relates to a cantilever-adjustable fastening shaft device. The cantilever-adjustable fastening shaft device comprises a long straight sleeve. An upper inner thread sleeve and a lower inner thread sleeve are arranged at the two ends of the long straight sleeve correspondingly. The upper inner thread sleeve and the lower inner thread sleeve are provided with bearing devices correspondingly. A long thread bolt penetrating through the upper inner thread sleeve, the long straight sleeve and the lower inner thread sleeve is arranged, and a nut is arranged at the end of the long threadbolt. Through the cantilever-adjustable fastening shaft device, free deflection of a cantilever positioning device can be achieved, and the cantilever device can have the overall up-down adjusting function while the overall coaxiality of cantilevers is fully ensured, so that construction adjusting is facilitated, the adjusting cost in the later period is reduced, the time and labor are saved, andthe construction efficiency is improved greatly.
Description
technical field [0001] The invention relates to the technical field of electrified railway catenary, in particular to an adjustable fastening shaft device with a wrist arm. Background technique [0002] The electrified railway catenary will expand and contract along the direction of the line due to the influence of the ambient temperature, especially in areas with large temperature differences between day and night, the deflection of the arm support device is more likely to occur, in order to avoid the sticking problem between the flat arm and the oblique arm , the suspension positioning device needs to rotate coaxially and synchronously in the same vertical plane. [0003] The traditional wrist-arm support device is a hook-and-loop connection, which has no coaxiality and insufficient rotational freedom. It is not easy to move as a whole when rotating, and there is a phenomenon of stagnation. The traditional wrist arm support device also has no up and down adjustment functi...
Claims
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CPCB60M1/20
Inventor 张珹王玉环田升平金光张晓栋杨艺唐晓岚张学武余纲高妍
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP