Length adjustment device, suspension bridge stiffening beam installation system and method
An installation system and length adjustment technology, which is applied in the direction of suspension bridges, erection/assembly bridges, bridges, etc., can solve the problems of difficult adjustment of the installation angle and installation position of the stiffening beam, and affect the installation accuracy of the stiffening beam, so as to avoid adjustment, easy installation, Easy to adjust the effect
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Embodiment 1
[0027] see figure 1 and figure 2 , the present embodiment provides a suspension bridge stiffening beam installation system, which is suitable for installing the stiffening beam 200 on the main tower 300 . The main tower 300 includes a tower body 301 and a lower beam 302, the lower beam 302 is fixedly connected to the tower body 301, the main tower 300 is divided into an upstream tower column and a downstream tower column, and a main cable 303 is arranged between the upstream tower column and the downstream tower column .
[0028] The stiffening girder installation system of the suspension bridge includes a support 110, a temporary sling 120, a length adjusting device 140, a span crane 130 and a winch (not shown).
[0029] The support 110 is installed between the lower beam 302 of the main tower 300 and the stiffening beam 200. In this embodiment, the support 110 is installed first, and the stiffening beam 200 is installed after the support 110 is accurately installed. Wher...
Embodiment 2
[0059] see Figure 7 In this embodiment, a length adjusting device 240 is provided, and the length adjusting device 240 is also connected with the temporary sling 120 for hanging and installing the stiffening beam 200 . The length adjustment device 240 in this embodiment is basically the same as the length adjustment device 140 in Embodiment 1 in terms of structure, connection method and installation method for installing the stiffening beam 200. The difference is that in this embodiment, the length adjustment device 240 It also includes a protection mechanism 245. In this embodiment, reference numerals not mentioned can refer to Embodiment 1.
[0060] The protection mechanism 245 includes a first wire rope 246 , a second wire rope 247 and a third wire rope 248 .
[0061] Both ends of the first steel wire rope 246 are respectively connected to the first adjusting screw 141 and the second adjusting screw 142 , and the length of the first steel wire 246 is greater than the leng...
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