33results about How to "Guaranteed perfusion quality" patented technology

The invention relates to a treatment method of an elevation-exceeding part of a concrete pouring pile head. The method comprises the following steps of: within 10 minutes after a pouring pipe is pulled out, inserting a branch compressed gas pipe of a concrete pouring pile head treatment device into concrete and ensuring that a distance of 100-500 millimeters is reserved between the bottom end of the branch compressed gas pipe and a required elevation of the pouring pile head; successively opening a regulating valve and a master regulating valve of the concrete pouring pile head treatment device to ensure that the compressed gas is ejected out from the bottom of the branch compressed gas pipe; within 3-10 minutes after slurry bubbles appear on the surface layer of the concrete, successively closing the master regulating valve and the regulating valve and stopping inputting the compressed gas; pulling the branch compressed gas pipe out; and chipping off a set elevation part exceeding the pouring pile head. In the invention, materials in different proportions in the concrete material are separated in the presence of the action of gas by adopting the compressed gas so that the strength of a redundant concrete part is greatly reduced, thus the part is easy to treat, and the main reinforcing steel bar of the pouring pile head and the quality of the pile head concrete are not easy todamage.

The invention provides a new type of concrete separation device and construction method for subway slab track construction. The separation device is installed on the rail above the track slab through traveling wheels, the separation device can slide freely on the rail, and the separation device passes through The slide rail beam and the slider are symmetrically equipped with two freely movable sub-chutes to achieve precise alignment between the sub-chute and the feeding port and the pouring hole, and can realize continuous pouring, which solves the problem of process interruption in the traditional construction process and improves the construction efficiency. higher. There are limit devices on both sides of the separation device. The limit device uses the stop block that can move up and down to realize the clamping connection with the filling hole of the track plate, and then realizes the braking of the separation device, avoiding the discharge of the ash hopper and the separation of the chute. There is no risk of the slipping device slipping during the filling process, the operation is convenient, and the use is safe and reliable.

The invention discloses a semi-assembled pipe curtain structure based on a steel reinforced concrete connection. The semi-assembled pipe curtain structure comprises lateral supporting structures and atransverse supporting structure, wherein the lateral supporting structures are used for supporting lateral surrounding rock, the transverse supporting structure is used for supporting the ground, thelateral supporting structures are connected through the transverse supporting structure, each of the lateral supporting structure and the transverse supporting structure comprise a plurality of largesteel pipes, the adjacent large steel pipes are connected through a prefabricated connecting component, and concretes I are filled in the large steel pipes for packaging the prefabricated connectingcomponent. The construction process of the semi-assembled pipe curtain structure based on the steel reinforced concrete connection comprises the following steps of 1, manufacturing a working well; 2,prefabricated connecting members outside the field; 3, installing a pipe curtain; 4, forming a pipe curtain structure; and 5, grouting reinforcement treatment and building a building. The manufacturing process of the prefabricated connecting component is standardized, the concrete pouring quality of the prefabricated connecting component is guaranteed, and the phenomena of insufficient concrete pouring compactness and internal concrete missing are avoided.