SU998657A1

SU998657A1 - Hydraulic pile hammer

Info

Publication number: SU998657A1
Application number: SU802917420A
Authority: SU
Inventors: Александр Иннокентьевич Федулов; Виктор Федорович Атаманов; Александр Абояздинович Амалатов; Юрий Георгиевич Ишхнели
Priority date: 1980-04-23
Filing date: 1980-04-23
Publication date: 1983-02-23

Description

(54) ГИДРОМОЛОТ(54) HYDROMOLOT

Изобретение относитс к строи . тельству и может быть использованр дл погружени свай, шпунта и свайоболочек при строительстве зданий, мостов и дорог.The invention relates to construction. It can also be used to sink piles, dowels and pile shells in the construction of buildings, bridges and roads.

Известен гидравлический молот, содержащий рабочий гидроцилиндр, шабот,золотник и импульсную систему , с гидравлическим или пружинным аккумул тором 1 .A hydraulic hammer is known that contains a working cylinder, a workbench, a spool and a pulse system with a hydraulic or spring accumulator 1.

Однако данный гйдромолот во врем погружени свай производит ее разрушение, а также не обеспечивает достаточно эффективного погружени сваи.However, this hydraulic hammer during piling produces its destruction, and also does not provide a sufficiently effective pile piling.

Наиболее близким к изобретению по технической сущности вл етс гидромолот, включающий корпус с поршнем-ударником и распределительное устройство в виде гильзы с отверсти ми , расположенной в корпусе соосно поршню, шабот, гидроаккумул тор , напорную и сливную магистрали , причем в стенках корпуса выполнены окна дл соединени с напорной и сливной магйстралйми 2.The closest to the invention to the technical essence is a hydraulic hammer, comprising a housing with a piston-hammer and a distributing device in the form of a sleeve with openings located in the housing coaxially with the piston, work pressure, hydroaccumulator, pressure and drain lines, and connections with pressure and discharge magistralimi 2.

Недостатком известного гидромолота вл етс то, что перебрасывание клапана из положени , соедин ющего полости аккумул тора и погружател .A disadvantage of the known hydraulic hammer is that the valve is thrown from the position connecting the cavities of the battery and the immerser.

в положение, размыкающее эти полости , происходит за счет увеличени давлени в штоковой полости. При этом поршень-ударник испытывает дополнительную возрастающую силу, направленную вверх против направлени погружени сваи. В св зи с чем снижаетс длительность и посто нство силового воздействи на сваю со сторо10 ны поршн , а в конечном итоге - эффективность погружени .The position opening these cavities is due to an increase in pressure in the rod cavity. At the same time, the hammer piston experiences an additional increasing force directed upwards against the direction of the pile immersion. In this connection, the duration and constancy of the force effect on the pile from the side of the piston is reduced, and ultimately, the efficiency of immersion.

Кроме того, поршень-ударник перед каждым импульсом осуществл ет удар по погружаемому элементу и разруша15 ет его ударно-динамическим воздействием .In addition, before each impulse, the piston-impactor strikes a submerged element and destroys it by shock-dynamic action.

Целью изобретени вл етс повышение эффективности работы.The aim of the invention is to increase efficiency.

Эта цель достигаетс тем, что в This goal is achieved by the fact that

Claims

20 hydraulic breaker, including a housing with a piston-hammer and a switchgear in the form of a sleeve with holes, located in the housing coaxially with the piston, jib, hydroaccumulator, torus, and discharge and discharge lines; and the sleeve is installed on the workhead with the possibility of movement along it, while the drain windows in the housing are placed above the sleeve, in addition, the hydraulic hammer is equipped with a piston-hammer that is located at the level of the drain windows ji A sleeve with windows, with the additional sleeve above the upper edge of the windows, has an annular limit lane and a notch that forms a cavity with the body, which is permanently connected to the working cavity of the accumulator. The drawing shows a hydraulic hammer General view. The hydraulic hammer consists of a housing 1 within which the distributing device 2 is arranged coaxially; it is made in the form of a sleeve with radial holes; 1. Hydraulic accumulators 7 with working cavities 8 are coaxial with the axis of the housing and connected via channels 9 to the cavity 10 formed by cylindrical and end surfaces of the housing 1 and the liner 2. 11, it is movable in the direction ae PTO sleeve 5 with radial windows 12. The cylindrical housing and the end surface of the sleeve 1 and 5 form an annular cavity 13 which through a channel 14 associated with the working cavities ACCUM l torus. Case 1, shaft 3 and piston drummer 4 form a working cavity 15 connected to the working cavity of accumulators 7 through openings 16 made in the walls of the housing 1 and coinciding with the radial openings of the distribution device

2.. Hydraulic hammer works as follows. The working fluid from the pump is supplied to the working cavities 8 of the hydroaccumulators 7. The fluid pressure from these cavities is transferred through the channels 9 and 14 into the cavities 10 and 13, as a result of which the sleeve of the distributor 2 moves to the extreme upper position, by means of the compartment The cavities B of the hydroaccumulators 7 and the sleeve 5 are moved to the lowest position, ensuring the combination of the drain windows 11 and the radial windows 12 of the sleeve 5. The piston 4 rises to a predetermined height by means of a piston lifting mechanism and is reset. When it falls, it overlaps the drain ports 11 and enters into interaction with the fluid at their level, thereby ensuring a rapid increase in pressure in the working cavity 15, as a result of which the sleeve 2 is moved to its lowest position. At the same time, it overcomes the force of fluid pressure acting from the side of cavity 10 and connects working cavities 8 and 15. At the same time, the increased pressure in the working cavity 15 acts on the area of the lower end of the sleeve 5 and moves it to its highest position, overcoming the force of fluid pressure, acting on the side of the annular cavity 13. In this case, the sleeve 5 partially overlaps the drain ports 11. The pressure of the fluid accumulated in the battery inhibits the movement of the impact piston down to a stop, and then accelerates it up. During this period, the potential energy of the piston of the impactor 4 and the energy of the hydroaccumulators are spent on the immersion of the pile and on tossing the piston of the impacting shock 4 up. Since the drain ports 11 are partially covered by the liner 5, the piston-hammer 4, when moving up, accelerates over a larger area than it slows down when moving down. When the hammer punch 4 rises above the windows 12, the pressure in the working cavity 15 drops, and the sleeve 5 under the action of the pressure force of the liquid in the cavity 13 returns to its lowest position, while the lower levels of the windows 12 and 11 coincide. At the same time, the sleeve 2 under the action of the pressure force in the cavity 10 is moved to the extreme upper position and cuts the working cavities 8 of the batteries 7 from the cavity 15. The hammer body 1 together with the batteries 7 and the guide cylinder 6 moves downwards along the force of gravity copra on the amount of piles in one pulse. After the piston-hammer 4 reaches the top dead center, it will begin to move downward, and the cycle will repeat. Using the proposed breaker will improve the performance of the pile and prevent them from being destroyed. Claim 1. Hydrohammer, comprising a housing with a piston-hammer and switchgear in the form of a sleeve with holes, located in the housing coaxially with the piston, jib, hydraulic accumulator, pressure and drain lines, and drain holes for connection to the pressure and drain lines, characterized in that, in order to increase the efficiency of operation, the sleeve is installed in