SU964054A2

SU964054A2 - Hydraulic vibrated hammer

Info

Publication number: SU964054A2
Application number: SU813273291A
Authority: SU
Inventors: Георгий Ильич Неудачин; Валерий Анатольевич Жагулин; Олег Иванович Калиниченко; Александр Андреевич Чаленко
Original assignee: Донецкий Ордена Трудового Красного Знамени Политехнический Институт
Priority date: 1981-04-10
Filing date: 1981-04-10
Publication date: 1982-10-07

Description

Изобретение относитс к строительству и может быть использовано в буровых работах , при спуске и извлечении обсадочных труб, дл погружени труб, свай, шпунтов п т. д.The invention relates to the construction and can be used in drilling operations, during the descent and extraction of casing, for immersion of pipes, piles, grooves, etc.

По основному авт. св. N° 583240 известен гидравлический вибромолот, включающий корпус с наковальн ми, переходник с нагнетательными каналами и выхлопными отверсти ми, распределительное устройство , состо щее из впускного и выпускного клапанов, причем переходник и распределительное устройство снабжены горизонтальными перегородками, установленными на входе рабочей жидкости, при этом нагнетательные каналы в переходнике смеПены относительно оси вибромолота в сторону , противоположную выхлопным отверсти м 1.According to the main author. St. Nos. 583240 is known for a hydraulic vibratory hammer, comprising a housing with anvils, an adapter with pressure channels and exhaust openings, a distribution device consisting of inlet and exhaust valves, the adapter and the distribution device being provided with horizontal partitions installed at the inlet of the working fluid, while The discharge channels in the adapter are measured relative to the axis of the vibratory hammer in the direction opposite to the exhaust ports 1.

Недостатками известного гидравлического вибромолота вл ютс низка эффективна мощность и КПД, обусловленные тем, что свободный ход порщн -бойка вниз (S) меньще свободного хода поршн бойка вверх (S) на величину свободного хода выпускного клапана вверх (а), вследствие чего происходит потер кинетической энергии гбойка при ходе его вниз и работа всего механизма вл етс неуравновешенной .The disadvantages of the known hydraulic vibratory hammer are low effective power and efficiency due to the fact that the free running of the piston downward (S) is less than the free running of the piston upwards (S) by the free running of the exhaust valve upwards (a), resulting in a loss of kinetic the energy of the bruise when it goes down and the operation of the whole mechanism is unbalanced.

Целью изобретени вл етс повышение эффективности и надежности работы гидравлического вибромолота путем обеспечени равеиства свободных ходов порш5 н -бойка вверх и вниз до встречи с выпускным клапаном и его хвостовиком.The aim of the invention is to increase the efficiency and reliability of the hydraulic vibratory hammer by ensuring the equality of free strokes of the piston n-up and down before meeting with the exhaust valve and its shank.

Указанна цель достигаетс тем, что в гидравлическом вибромолоте выпускной клапан снабжен кондентрично установленной на его хвостовике подвижной втулкой, This goal is achieved by the fact that in the hydraulic vibratory hammer the exhaust valve is equipped with a movable sleeve which is located on its shank,

10 торец которой выступает над верхним торцом хвостовика на рассто ние, соответствующее величине свободного хода выпускного клапана, при этом щток последнего 15 удлинен на ту величину.10 the end of which protrudes above the upper end of the shank for a distance corresponding to the free stroke of the exhaust valve, while the latter 15 is extended by that amount.

На фиг. 1 изображена схема предлагаемого гидравлического вибромолота; на фиг. 2 - положение выпускного клапана и поршн в момент удара бойка по ниж20 ней наковальне предлагаемого гидравлического вибромолота; на фиг. 3 - то же, в момент удара бойка по верхней наковаль-. не.FIG. 1 shows the scheme of the proposed hydraulic vibratory hammer; in fig. 2 - the position of the exhaust valve and the piston at the moment of the impact of the striker on the bottom 20 of the anvil of the proposed hydraulic vibro-hammer; in fig. 3 - the same, at the moment of striking the striker on the top anvil-. not.

Гидравлический вибромолот состоит из The hydraulic vibratory hammer consists of

Claims

25 of the housing 1, including the upper 2 and lower 3 anvils, adapter 4, provided with a horizontal partition 5, a discharge channel 6 and an exhaust hole 7. To the adapter 4 at the bottom of 30 there is a distribution device 8 having a horizontal partition 9, a chamber 10, an exhaust channel 11 and Connected to the dynndrome 12, inside which is mounted the mouthpiece 13, which is integral with the striker 14, the bottom of which has a diameter that is narrower than the normal diameter 13, is the second stunee of the differential normal, sealed with the cuff 1 5. A claian group is formed by an inlet claian 16 placed in chamber 10, an exhaust valve 17, a pusher 18 and 19. A shank 20 of an exhaust valve 17 rigidly connected to the valve 17 itself by means of a rod 21, a movable sleeve 22 concentrically mounted on a tail end 20, and The spring 19 is located in the head of the tongue 13. Moreover, the upper end 23 of the shank 20 is located from the upper end 24 of the sleeve 22 at a distance equal to the free stroke of the exhaust valve 17. The device operates as follows. In the initial positioning of the nipple 14 under the action of its own weight is in the lowest position, the inlet valve 16 is closed and the exhaust 17 is open. Due to the fact that sleeve 22, at its upper end 24, is unified into the inner end of the piston 13, there is a gap between the upper end 23 of the shank 20 and the inner end of the piston 13, equal to the free running of the exhaust valve 17-a (see Fig. 4). The velocity head of the working fluid supplied by the drilling pump to the vibratory hammer is taken up by the horizontal partition 5 and then through the discharge channel 6 of the transition 4 the liquid enters the annular gap between Corus 1 and the cylinder 12. Due to the pressure of the working fluid in the lower fluid level of the cylinder 12 Porsche 13 together with brisk 14 moves up. The fluid, which flows from above the piston 13, through the exhaust channel 11 in the switchgear 8 and the exhaust port 7 in the adapter 4 is forced into the well. Due to the pressure of the fluid in the chamber 10, which is separated from the exhaust hole 7 by the horizontal partition 9, the viass claian 16 remains closed. As the slug piston rises, spring 19 is compressed. In the upper position, the piston 13 is in contact with the exhaust valve 17 and performs a joint movement with it in the area, the value of which is determined by the formula: -5, where 5 is the full stroke of the piston, i.e. the stroke of the striker from the lower to the upper anvil ; S is the piston free stroke, that is, the piston stroke is before meeting the exhaust valve. Under the action of the push and the force of the compressed spring 19, the exhaust valve 17 and the entire valve group move upward by the amount of free running of the exhaust clan 17 - a (see Fig. 5), which is defined by the formula: 5k-6, where SK- is full stroke valve rpiynnbi (see Fig. 4). As a result, the valves are switched, the intake valve 16 by the pusher 18 is opened, and the exhaust 17 is closed. The working fluid begins to flow into the upper cavity of the cylinder 12, io, since the working area of the piston 13 is higher than the bottom, then it goes down with the striker 19. Lowering the crane, the piston 13 passes to meet the upper end 23 of the shank 20 of the exhaust valve 17, the distance S (see Fig. 5 and 2), which is equal to the free travel of the piston — upwards 5 (see Fig. 4). After that, with its internal end, it strikes the upper thrust 23 of the shank 20. As a result, the valve group moves down, the intake valve 16 and the exhaust 17 occupy the initial position. Then the cycle of operation is repeated. During the upward stroke, the striker 14 strikes the upper anvil 2, and during the downward stroke, the lower anvil 3. Apply the basement, concentrically mounted on the bushing of the bushing outlet valve, the upper end of which is located from the upper end of the shank at a distance equal to the magnitude of the free stroke The output valve, by increasing the length of the exhaust valve stem by the same amount, due to the achievement of free flow of the piston-upward arm and the viz before meeting with the exhaust valve and its tail, increase the effective power of efficiency and efficiency of hydraulic vibratory hammer. Claims of the invention Hydraulic vibrohammer according to ed. St. 583240 ,. characterized in that, in order to increase efficiency and reliability of operation, the exhaust valve is equipped with a movable hub, centered on its tailing, the end of which protrudes above the upper end of the shank, and the distance corresponding to the free stroke of the exhaust valve, while the latter is extended to the same veichinu The source of information taken into account in the examination: 1. USSR Copyright Certificate 583240, E 02 D 7/10, 1975 (prototype).

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