The construction patent topics are as follows:
1. A jacking device suitable for long-distance pipe jacking: The device mainly involves the field of pipe jacking construction, and mechanically jacks pipes. Type jacking greatly improves the efficiency of pipe jacking construction.
2. A steel bar tying device for pipe jacking construction: The device mainly involves the field of underground engineering construction. It mechanically compresses the steel bar pile, thereby assisting in tightening the steel bar pile. Binding improves the speed of tying steel bars in pipe sections and the tying and tightening of steel bar piles.
3. A sealed and pressurized grouting device for grouting holes: The device mainly relates to the field of grouting construction. Through sealed and pressurized grouting, the quality and efficiency of grouting construction are improved.