Jacking device

Abstract

The invention provides a jacking device, and relates to the field of large-span space structure construction. The jacking device comprises a supporting frame, a moving frame and a translation structure, the supporting frame is connected with the moving frame through the translation structure, the translation structure comprises a plurality of longitudinal sliding rails and a plurality of transverse sliding rails which are arranged in a staggered mode, the longitudinal sliding rails and the transverse sliding rails are slidably connected with the top end of the supporting frame, and the bottom end of the supporting frame is in one-to-one sliding fit with the longitudinal sliding rails through longitudinal sliding blocks; the bottom end of the supporting frame is in one-to-one sliding fit with the transverse sliding rails through transverse sliding blocks, so that the longitudinal sliding rails and the transverse sliding rails support the moving frame at the same time, and the top end of the supporting frame is rotationally connected with a push-pull element abutting against the moving frame. Aiming at the problem that jacking equipment is difficult to meet the translation and jacking requirements during large-span space structure construction at present, a segmented structure is adopted, so that a movable frame can translate relative to a supporting frame to change the jacking position, the movable frame and the supporting frame keep stable contact, and the height and position adjusting requirements in the external structure jacking process are met.

Description

technical field [0001] The invention relates to the field of construction of large-span space structures, in particular to a jacking device. Background technique [0002] The application of steel structure buildings in long-span space structures is gradually increasing. The construction methods of long-span space structures mainly include high-altitude bulk method, overall lifting method, overall jacking method and sliding construction method. The high-altitude bulk method is relatively simple, but it is time-consuming and labor-intensive. It is troublesome to set up construction frames, and high-altitude construction is very dangerous; the overall lifting method is to assemble the structure on the ground, and then lift the structure to a predetermined height through equipment, but some structural lifting points are difficult to arrange; sliding The moving construction method is to assemble the structure at other positions, and then move the structure to the designated posit...

AI Technical Summary

Problems solved by technology

[0003]Although the overall jacking method has obvious advantages, it also has certain disadvantages

First of all, when assembling on the ground, if each node is laid out in advance to determine the position according to the drawings, and then assembled, then the construction speed will be greatly reduced, the construction cost will be significantly increased, and the construction time will be too long. After laying out the wires and then constructing, there will inevitably be errors after the structure is assembled. After the jacking up, it still cannot reach the predetermined position. The structure needs a certain range of translation to make the structure in place and carry out the final assembly.

However, the current lifting equipment is composed of a vertical jack and a lifting frame. Since the jack can only move in the vertical direction, it is difficult to complete the parallel movement of the structure; Tilt and produce a certain displacement, then start the jack on the lower side to make the structure level, and finally adjust the position of the jack to achieve the effect of translation

Although this method can achieve the purpose of translating the structure, it is too dangerous, and the structure may collapse due to excessive tilt and excessive displacement

Images