SU583240A1 - Hydrooperated vibration pile driver - Google Patents

Description

one

The invention is RELATED to construction and can be used in drilling operations, emergency response, descent and removal of casing pipes, for immersion of pipes, piles, grooves, etc.

Known hydraulic vibro yolot inclusive housing with a stepped piston connected with a shock valve and intake and exhaust valves 1.

Vibrating hammer works as follows.

Fluid is supplied to the vibratory hammer through a distributor: the head and, depending on the position of the intake and exhaust valves, enters the lower or upper and lower cavities of the cylinder. When | this piston-striker reciprocates and in extreme positions strikes the anvil of m.

The disadvantage of lime hydraulic vibration hammer is the low reliability of the mechanism due to the fact that the inlet valve does not accept the velocity head | ibt fluid and to start the vibro-hammer, and iEhodits are additional. fr6ystv, allowing you to smoothly on a1 & amp & rioMa y drill

2

pump and drastically relieve pressure in the pressure pipe.

Another hydraulic vibratory hammer is also known, including a housing with anvils, a piston with a striker, an adapter with pressure channels and exhaust ports, a distribution device consisting of inlet and exhaust valves 2.

The flow of fluid entering the switchgear provides the piston-bout system with a downward or upward movement, with the anvil being struck in the lowest position ..

However, such a vibrohammer is not sufficiently reliable in operation due to the fact that when the piston with the valve moves, the latter overcomes the additional force created by the velocity pressure of the working fluid, which creates difficulties in starting the striker and leading to instability in his work.

The goal of the willow is 1 in. increase the reliability of the hydraulic motor by protecting the valve sitycKHoro from the high-speed, pressure p «1 working fluid. .

Claims (2)

This is achieved by the fact that the adapter and the distributor are equipped with horizontal baffles installed at the inlet of the working fluid and bones, while the delivery channels in the adapter are offset relative to the axis of the vibro-hammer in the direction opposite to the exhaust ports. The diagram of the hydraulic vibro-hammer is shown. The hydraulic vibrating hammer consists; from the housing 1, including the top 2 and the lower 3 anvils, an adapter 4 provided with a horizontal partition 5, a discharge channel b and an exhaust hole 7. To the adapter 4 there is attached a distribution device 8 having a horizontal partition 9, a chamber 10. and an exhaust channel 11. The switchgear 8 is connected to the cylinder 12, inside which the piston 13 is installed, connecting one piece to the striker 14. The lower part, striking, having a smaller diameter than the diameter of the piston 13, is the second stage The differential piston, which is sealed by the cuff 15, the valve group is formed by the intake valve 16, placed in the chamber 10, the exhaust valve 17, the pusher 18 and the spring 19. The tail 20 of the exhaust valve 17 and the spring 19 are installed in the piston head 13. In the initial position the striker 14 } under the action of its own weight is in the lowest position, the inlet valve 16 is closed, and the exhaust is open. The velocity head of the working fluid supplied by the drilling pump to the vibromole is perceived by the horizontal partition 5 and then through the discharge channel b of the adapter 4 the fluid enters the annular gap between the housing 1 and the cylinder 12. Due to the pressure of the working fluid in the lower cavity of the cylinder 12, the piston 3 moves with the striker 14 up The fluid located above the piston through the exhaust channel 11 in the distribution device 8 and the exhaust oTBe part 7 in the adapter 4 is forced into the well. Due to the pressure of the fluid in the chambers 10, which is separated from the exhaust opening 7 by a horizontal partition, 9, the inlet valve 16 remains closed. As the piston rises, the spring compresses. B. The upper position is poraen 13 is in contact with the exhaust valve 17. The combined action of the push and the force of the compressed spring 19 ensures the switching of the valves, the inlet valve 16 by means of the pusher 18 opens, and the exhaust valve l7 is hardened. In this case, the working fluid enters the upper cavity of the cylinder 12. Since the working area of the piston 13 is larger from above, it goes down along with the brisk 14. In the lower position, the piston 13 with its internal end strikes the shank 20 of the exhaust valve 17. As a result of the impact, the valve group moves down the intake 1B and the outlet 17 valves occupy the original position. Then the loop repeats. --l ... -;. ;;:;:; ..;,; .... Pry:; x long &WOOK; 1 & ek L14 Strikes a blow on the upper hull S, and during a down stroke - on the lower anvil 3, the presence of horizontal partitions in the adapter and the distribution 5, installed at the inlet of the working fluid and the displacement of the heating channel in the adapter relative to the axis of the vibrohammer in the opposite direction the exhaust port allows the inlet valve to be protected from direct action of the velocity head, as a result of which the reliability of the vibratory hammer is significantly increased. Claims of the invention Hydraulic vibratory hammer, including a housing with anvils, a piston with a striker, a spider with discharge channels and exhaust ports, a switchgear consisting of an inlet valve and a vent valve, which is of the same type. that, in order to increase the reliability of operation due to the protection of the inlet valve from the velocity head of the working fluid, the adapter and the switchgear are provided with horizontal partitions installed at the inlet of the working fluid, while the discharge channels in the adapter are opposite to the axis of the vibratory hammer Sources of information taken into account during the examination: 1. USSR author's certificate No. 240539, cl. E 02 d 7/18, 1967. 2. Authors certificate of the USSR 310007, cl. E 02 d 7/10, 1968.