SU1180444A1 - Apparatus for driving pipe piles into bottom of water basin - Google Patents

Abstract

A DEVICE FOR PACKING PIPES. PILES INTO THE BOTTOM OF THE WATER, containing a working cylinder installed in the cavity of a tubular pile with a piston head and pivot, a pump, hydraulic lines connecting the pump with the working cylinder, and valves with a control system different in that In order to increase the efficiency of driving piles at great depths and the reliability of the device, the working cylinder communicates with the internal cavity of the pipe pile and with the suction line of the pump by valves controlled by means of working which cylinder piston position sensors and GLib datchika.davleni connected to the control system. (L

Description

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4 t 4; The invention relates to the construction of foundations and foundations erected in the coastal zone, namely to devices for driving from watercraft of pipe sections to the bottom of a reservoir. The purpose of the invention is to improve the efficiency of pile driving at great depths and the reliability of the device. FIG. 1 shows the general scheme of the device; FIG. 2 shows the principle scheme of a percussion device; Fig. 3 is an electrical control system. The device for driving pipe piles into the bottom of the reservoir contains the basic lifting machine 1 afloat, equipped with a pump 2 with a flexible pressure head Slag 3 and a guide 4 for holding the pipe pile 5 with the tip 6 in a predetermined (vertical or national) position, at the end of the pile 6 on the gravel-sand cushion 7 there is a percussion working body 8 connected by cable 9c by the remote control system 10, which is installed on the base machine 1, the percussion working body 8 includes a cylinder 11 with a piston-jib 12, a shaft 13 mounted on the bottom e of a cylinder, a pump 14 with a drive motor 15. A piston head divides the internal cavity of cylinder 1 into upper A and lower B working cavities equipped with a normally open 16 and normally closed 17 valves with an electromagnetic actuator. The electrically controlled normally closed valves 18 and 19 connect the cavities A and B to the pump 14 inlet, equipped with the normally closed solenoid valve 20. In the upper part of the cylinder (cavity A) there is mounted a device for fixing the extreme upper position of the piston contains spring-loaded rods 21 entering the annular groove 22 formed on the outer surface of the piston-block and electromagnets 23. One of the rods 21 is connected to an electric position sensor 24. In the lower hour of the cylinder, a device is mounted for fixing the lower position of the striker piston, consisting of a spring-loaded rod 25 connected to the position sensor 26. In the line connecting the cavity B of the cylinder with the inlet of the pump 14, in front of the valve 19 is installed a contactless electric pressure sensor 27. The electrical control system comprises a power 28 and a control 29 blocks connected to a DC power source E, and a starting device including buttons 30 and 31, a magnetic contactor 32 with contacts 33 to 35. The power block 28 is connected by power supply lines to an electric motor 15, the windings of electromagnets .23 and solenoid valves 16-20 of the impactor (FIG. 2), the sensors of which 24, 26 and 27 are connected to the control unit 29; In the non-operating state of the impactor (FIG. 2), its piston . the striker 12 is in the lower position and rests on the work 13. The coils of the electromagnets 23 and the windings of the solenoid valves 16-20 are de-energized. Device for driving piles into the bottom of the reservoir works as follows. After the pile 5 is installed in a vertical position, the gravel-sand cushion dumping 7 and the shock body 8 are installed on it by pump 2, the flexible hose 3 pumps water into the pile (Fig 1). The cavity of the cylinder 11 of the shock body is then pumped through the valve 16 is filled with water (Fig. 2). Water is pumped into the pile 5 to a level at which the pressure of the water column in the lower part of the pile will be sufficient to move the piston of the striking member to the upper position of the piston, in case of opening the valve 17 with one belt emptying cavity A, I Upon completion of injection, pump 2 (FIG. 1) turns off and turns on the electrical control system (FIG. 3) by pressing button 31, which closes contacts 33 to 35 of the magnetic contactor 32, Power unit 28 is connected to power supply E J, and supplies the voltage to the motor 15 and the windings of the solenoid valves 16-18, this turns on the pump 14, closes the valve 16 and opens the valves 17 and 18. The cavity A of the cylinder 11 is connected to the inlet of the pump 14, which 3 pumps water from it into the pile cavity, into the cavity B of cylinder 11 from the cavity of the pile through the valve 17 will begin to flow water, under pressure of which the piston unit 12 rushes inwards towards the empty cavity A, After some time, the piston head 12 with the upper end, replaced by chamfer, moves the rods 21 of the device fixing the extreme upper position of the piston-blockage. At the next time point, the rods 21 are aligned with the bore 22 in the piston head. Under the action of the springs, the rods 2 move to the initial position (inside the cylinder 11) and the piston-bollard 12 locks in the upper position. When the rods 21 are pushed by the piston-striker 12 in the position sensor 24, a signal is sent to the control unit 29 of the electrical control system (FIG. 3), at the command of which the power unit 28 applies a voltage to the windings of the solenoid valve 19 and simultaneously winds the windings of the solenoid valves 16-18, the valves 19 and 16 open and the valves 17 and 18 are closed. Thus, the pump 14 is cut off from the cavity A of the cylinder 11 and attached to its cavity B, from where it pumps water into the pile cavity. The cavity A of the cylinder is filled with water from the cavity of the pile through the normally open valve 16. When pressure in the cavity B is reached, which corresponds to the moment of its emptying, the pressure sensor 27 generates a signal arriving at the control unit 29 of the electrical control system. On this signal, unit 29 generates a command, by which power unit 28 supplies power to electromagnets 23, winding of electromagnetic valve 20 and turning off the winding of electromagnetic valve 19 (FIG. 2), solenoids 23 pull in the rods 21, which release the firing piston. 12, valve 20 is simultaneously unlocked and valve 19 is closed. Under the action of its own weight and pressure of water flowing through valve 16 into the cavity A of the cylinder 11, the firing piston 12 rushes down, making a working stroke. In this case, the pump 14, whose inlet is communicated through open 44 valve 20 with a pile cavity, works for itself. At the moment of time immediately preceding the impact, the downward-moving piston 12 displaces the rod. 25 of the device for fixing the first position of the piston block outside the working volume of the cylinder 11, after which it strikes the head 13, realizing the immersion of the pile 5 in the bottom soil. The signal of the position sensor 26 generated when the rod 25 is moved is supplied to the control unit 29 of the electrical control system (FIG. 3). The control unit 29 generates a command that the power unit 28 supplies power to the windings of the solenoid valves 16-18 and de-energizes The electromagnets 23 and the windings of the solenoid valve 20 (FIG. 2). The rods 21 are returned to their original position by return springs. The valves 16 and 20 are closed, and the valves 17 and 18 are opened. As a result, the cavity A of the cylinder 11 is cut off from the cavity of the pile 5 and connected to the inlet of the pump 14, which pumps out water from it. Under the pressure of water flowing through the valve 17 into the cavity B of the cylinder 1 1, the firing piston 12 will begin to move up, idling. In this case, the piston-bolt will release the rod 25, which is set to the initial position by the return spring. From this point on, the described process is periodically repeated in automatic mode. Turning off the device’s striking member 8 is performed by pressing button 30 of the electrical control system (FIG. 3), as a result contacts 33 to 35 of magnetic contactor 32 are opened and all electric circuits of the device are de-energized. The presence of the controllable position and pressure of the valves and of the pump and controlled by means of contactless sensors allows the reciprocating movement of the piston in the automatic tool, using water that fills the pile cavity as an energy carrier. Attaching the mass of water entering under pressure into the cavity A of the cylinder of the working body, to the mass of the working stroke of the piston, the pressure increases and myca shock,

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Claims (1)

DEVICE FOR PUSHING PIPE PILES INTO THE BOTTOM OF THE WATER BOTTOM, containing a working cylinder installed in the cavity of the pipe pile with a ram-piston and a rammer, a pump, hydraulic lines connecting the pump with a working cylinder, and valves with a control system, characterized in that, in order to increase efficiency driving piles at great depths and reliability of the device, the working cylinder is in communication with the internal cavity of the pipe pile and with the suction pipe of the pump by valves controlled by means of mounted in the upper and lower parts of the working qi the cylinder of the piston-striker position sensors and the pressure sensor connected to the control system.