– Top bracket and bottom bracket are collectively referred to as construction screw. Also known as up and down.
-The top bracket and bottom bracket are used in conjunction with steel pipes and scaffolding during the construction process to adjust the height of scaffolding and pipe racks, and to balance and support heavy objects and bear weight. The top support and the bottom support play the role of top support and bottom support.
–In appearance, the top bracket and the bottom bracket can be clearly distinguished.
The jacking is used in the upper end of the column steel pipe in construction engineering, the chassis is at the upper end, and the chassis has folds;

The purpose and method of use of the jacking for construction:
The use of building jacking: it is used in cooperation with steel pipes and scaffolding during the construction process
It has the effect of adjusting the height of scaffolding and pipe frame, balancing and supporting heavy objects, and bearing weight.
As a result, it is mostly used in the construction process of concrete pouring by plane constructors.
With the rapid development of real estate and three-dimensional transportation in recent years. The amount of jacking is also changing with each passing day
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Classification of top support for construction: according to the part used, it can be divided into top support, bottom support and pipe support. The upper support is used on the upper end of the column steel pipe. The chassis is at the upper end, and the chassis has flanges. The bottom support is used at the lower end of the column steel pipe in the construction of the building. The chassis is in the lower part, and the chassis can not be folded. The pipe support is stuck on the parallel steel pipe, and the upper half-moon shape of the chassis can be divided into two types according to the material of the screw: hollow support and solid support. The lead screw of the hollow jacking is made of thick-walled steel pipe. Lighter: the solid top bracket is made of round steel heavier. According to whether it has wheels, it can be divided into: general jacking and leg wheel jacking. Pulley jacks are generally galvanized. It is used in the lower part of the movable scaffold to facilitate the pushing of the construction process.
1. Generally, the jacking is used in the construction of engineering buildings. The solid jacking can be divided into hot-rolled screw and cold-rolled screw according to the production process of the screw. The hot-rolled lead screw has a beautiful appearance and a slightly higher cost. The appearance of cold-rolled screw is not very beautiful. Equipment for construction lead screws. The production process of manufacturers in various places is very different。