Abstract: A multifunctional wall clamping device includes a wall-clamping platform, a main body, and a wall-pressing device, wherein the main body has a center hole. The wall-pressing device includes a wall-pressing hydraulic cylinder disposed on an upper support, and a jacking cylinder disposed on a lower support. The wall-clamping platform includes two U-shape pincer boxes with a same geometry and a U-shaped horizontal cross section. The U-shape pincer boxes are arranged with openings facing each other on the same axis to form a combination with a rectangular cross section. A piston rod of the wall-pressing hydraulic cylinder is connected to a top of the wall-clamping platform such that the wall-clamping platform is vertically suspended in the center hole. Outside walls of the wall-clamping platform include roller wheels, which can roll on inner walls of the center hole and inner walls of rectangular columns of the upper support and the lower support.

Abstract: An end point closing wall forming device of an extrusion type underground diaphragm wall comprises a main body (1) and a vibration water spraying device. The vibration water spraying device is fixedly disposed inside the main body (1). The end point closing wall forming device of an extrusion type underground diaphragm wall further comprises a separation device. The separation device is movably sheathed on the outer side of a short edge (11?) of the main body (1). Also provided is a method for operating an end point closing wall forming device of an extrusion type underground diaphragm wall.

Abstract: A squeezing device for an underground project, comprising a guide body, a vibration system, a lubricating system, a guide system, a cutting mechanism and a gate, wherein the vibration system is located on four walls of the guide body, the lubricating system is internally provided with a lubricating pipeline along the four walls of the guide body and communicates with a corresponding lubricating nozzle, the guide system is located on four walls at a front end of the guide body, and the cutting mechanism is located at a front end of an inner cavity of the guide body, and the gate is located in a functional bin.

Abstract: A multifunctional wall clamping device of a static piling machine comprises a wall clamping platform (1), a machine body (31), and a wall pressing device. A through machine body hole (6) is vertically provided in the center of the machine body (31). The wall pressing device is disposed on the machine body (31). The wall pressing device comprises a wall pressing oil cylinder (7) and a jacking oil cylinder (27). The wall pressing oil cylinder (7) is disposed on an upper support (25). The jacking oil cylinder (27) is disposed on a lower support (26). The wall clamping platform (1) comprises two horizontal U-shaped pincer-like boxes (2) identical in geometric size. Openings of the boxes are opposite, and the two boxes are arranged on the same axis to form a combination with a rectangular section. The top surface of the wall clamping platform (1) is hinged by a piston rod (8) of the wall pressing oil cylinder (7) and vertically suspended in the machine body hole (6).

Abstract: An end point closing wall forming device of an extrusion type underground diaphragm wall comprises a main body (1) and a vibration water spraying device. The vibration water spraying device is fixedly disposed inside the main body (1). The end point closing wall forming device of an extrusion type underground diaphragm wall further comprises a separation device. The separation device is movably sheathed on the outer side of a short edge (11?) of the main body (1). Also provided is a method for operating an end point closing wall forming device of an extrusion type underground diaphragm wall.

Abstract: Provided is a variable-pitch wall forming device for a press-fit type underground diaphragm wall, comprising a wall shoe (3), vibration chambers (4), a fixed-pitch box (1) and a variable-pitch box (2), wherein the variable-pitch box (2) is installed in the fixed-pitch box (1), the wall shoe (3) is installed on the bottom of the variable-pitch box (2) and the fixed-pitch box (1), and the vibration chambers (4) are provided on a side wall of the fixed-pitch box (1) and a side wall of the variable-pitch box (2). Also provided is a method of variable-pitch wall forming for a press-fit type underground diaphragm wall.