SU1472572A1 - Electromagnetic hammer for underwater works - Google Patents

Abstract

This invention relates to technical means for driving piles, grooves, anchors, and the like. element under water and the production of other underwater operations using impact. The purpose of the invention is to increase the efficiency of the hammer. The hammer comprises a housing with coils, a hollow pipe with a brisk dividing shell dividing its volume into upper and lower cavities, and a cap with a cavity. It is equipped with a high-pressure chamber communicated by means of a controllable valve with the upper cavity cavity, the forward one communicating with each other, and the lower one communicating with the cavity of the cap equipped with a locking sleeve and a float gauge of water level included in the valve control system. 1 il.

Description

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 The invention relates to technical means for driving piles, tongues, anchors, etc., of the elements of the water system and the production of other underwater operations using impact.

The purpose of the invention is to increase the efficiency of the hammer.

The drawing shows a diagram of an electromagnetic hammer for underwater operations.

The electromagnetic hammer comprises a housing 1 with a diamagnetic guide 2 and coils 3 and 4 of working and idling. An anchor-bolt 5 placed in a diamagnetic guide divides its internal volume into the upper 6 and lower 7 cavities. On the housing 1, for example, in its upper part a high-pressure air chamber 8 is placed, communicated with the upper cavity 6 of the hammer by means of a normally closed valve 9 with an electric, for example electromagnetic, actuator including a coil 10 and a measur 11 with a pusher 12. In the lower part The case 1 is fitted with a headband 13, which performs the function of an air bell and carries out

fixing the hammer on the pile 14 with the help of the fixing sleeve 15 with through holes 16.

In the upper part of the headgear in the guide 17, fitted with a cushioning pad 18 at the bottom end, the seat 19 is placed. housing with the upper cavity 6 of the guide.

A float sensor is installed in the cap, which includes a float 23 with a ferromagnetic core 24 and a coil 25 installed in the lattice slot 22. A bobbin 25 is included in the automatic control unit 26 of the normally closed valve 9.

In the off state, the power coils 3 and 4 of the hammer and the coil 25 of the float sensor are de-energized. Anchor anchor 5 rests on work 19, as shown in the drawing.

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Hammer works as follows.

When the hammer is turned on, power is supplied to the coil circuit 25 of the float sensor and alternately to the idling coil 4 and the working stroke coil 3.

As a result, under the action of the electromagnetic forces of these coils, the bark-bout 5 combines, reciprocating, a blow at stage 19 at the end of each working stroke.

in the guide 17, into the lower cavity of the hammer. The pressure in cavity 6 and 7 and in the cavity of the headgear increases, and the water level in the headgear begins to drop. When the water level decreases, the float 23 5 is lowered and the ferromagnetic rod leaves the coil 25. As a result, the inductive resistance of the coil 25 decreases, which changes the current in its circuit.

..On this signal, the block 26 automatically engages the immersion control unit by switching off the coil 10. Driving the pile 14 with the work 19, after the valve 9 closes, and the hammer moves the starting position to the end position,

the path sits in a cushion pad 18 The described control duty cycle

on the collar shabota. air pressure in the car periodically

As the hammer with the pile sinks, the pressure is repeated as the hammer sinks into the will of the water, and its level increases 15.

inside the cap reaches the float 23 The absence of fluid and the associated

float sensor. The float floats up; by using the sealing system half-displaced to the upper part of the lattice and hammer, it significantly simplifies its

sockets 22, and a ferromagnetic core in-structure, improves operational

Dit inside the coil 25. Inductive co-quality. On the entire range of workers, the coil 25 resistance of the coil abruptly increases, the beater’s submerged hammer head works,

and, therefore, the current in its circuit changes. As well as on the surface in the air medium, the block 26 automatically, without experiencing significant co-control, supplies power to the movement coil, which increases the energy 10. Anchor 11 is drawn inside -rue strike and therefore boosts

carcass and acts on the pusher 12, which is the 25 efficiency of the machine, opens the valve 9. Compressed air. Periodic pumping of the inside of the high-pressure chamber 8 of the forward air of the machine through the washed

The coaxial air ducts are wired to the air ducts 21 and the effective cooling of the coils through the openings goes into the upper cavity 6 and far away.

16 in the fixing sleeve 15 in the ground cavity without using the liquid refrigerant head 13, and through the openings 20 30 of the agent.

3 12,

Editor A. Ogar Order 1681/31

Compiled by N. Zabolotska

Tehred I. VeresKorrektor S. Cherni

Circulation 588 Subscription

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR

113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and publishing combine “Patent, Uzhgorod, ul. Gagarin, 101

Claims (1)

ELECTROMAGNETIC HAMMER FOR UNDERWATER WORKS, comprising a body with coils, a hollow guide with a striker, dividing its volume into upper and lower cavities, and a headgear with a cavity, characterized in that, in order to increase work efficiency, it is equipped with a high-pressure chamber communicated by means of a controlled valve with an upper guide cavity, moreover, the guide cavities are interconnected, and the lower one is connected with a head cavity equipped with a fixing sleeve and a float water level sensor, included into the valve control system.