SU669022A1

SU669022A1 - Percussive pneumatic device for making holes in soil

Info

Publication number: SU669022A1
Application number: SU772488092A
Authority: SU
Inventors: Владимир Петрович Богинский; Владимир Васильевич Климашко; Борис Николаевич Смоляницкий
Original assignee: Институт Горного Дела Со Ан Ссср
Priority date: 1977-05-13
Filing date: 1977-05-13
Publication date: 1979-06-25

Description

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Изобретение относитс к области строительной техники и может быть использовано в пневматических устройствах ударного действи дл пробивани скважин в грунте, при забивании в грунт стальных труб, шпунта , электродов заземлени .The invention relates to the field of construction equipment and can be used in pneumatic percussion devices for punching wells in the ground, when steel pipes, a tongue, and grounding electrodes are driven into the ground.

Известны пневматические устройства ударного действи дл образовани скважин в грунте, которые содержат корпус, в котором под действием сжатого воздуха рабочих камер перемещаетс ударник, нанос щий удары по носовой части устройства и забива , тем самым его в грунт 1.Pneumatic percussion devices are known for the formation of wells in the ground, which comprise a housing in which, under the action of compressed air of the working chambers, the impactor moves, striking the nose of the device and hammering it into the ground 1.

Наиболее близким к предложенному по технической сущности и достигаемому результату вл етс пневматическое устройстBU ударного действи дл образовани скважин в грунте, включающее корпус, в котором установлен ступенчатый ударник, имеющий воздухопропускные каналы и соверщающий возвратно-поступательное перемещение под действием сжатого воздуха рабочих камер, подаваемого в устройство-через воздухоподвод щий шланг, закрепленный в хвостовой части устройства 2.The closest to the proposed technical essence and the achieved result is a pneumatic impact device for the formation of wells in the ground, including a housing in which a stepped impactor is installed, having air passages and performing reciprocating movement under the action of compressed air of working chambers fed into the device - through the air supply hose fixed in the tail section of the device 2.

Недостатком известной конструкции вл етс недостаточна прочность хвостовойA disadvantage of the known construction is the insufficient strength of the tail

части устройства, так как она выполнена цельной и жестко закреплена в корпусе. В результате этого она воспринимает пиковые нагрузки, возникающие при соударении ударника с корпусом, что снижает ее долговечность .parts of the device, as it is made integral and rigidly fixed in the housing. As a result of this, it perceives the peak loads arising from the impact of the striker with the body, which reduces its durability.

Разрущение хвостовой части под действием ударной нагрузки происходит в местах сопр жени ее цилиндрической части с задней стенкой и задней стенки со штуцером. В указанных местах происходит концентраци напр жений, которые могут превысить предел прочности материала.Destruction of the tail section under the action of a shock load occurs in the places of its conjugation of the cylindrical part with the rear wall and the rear wall with the choke. Stress concentrations occur at these locations, which may exceed the tensile strength of the material.

Кроме того, выполнение этой части в виде цельной конструкции нетехнологично, а выполнение ее из отдельных элементов, соединенных между собой, например, при помощи сварки, невозможно из-за недостаточной прочности соединени при ударных нагрузках.In addition, the implementation of this part in the form of a solid structure is not technological, and its implementation from separate elements interconnected, for example, by welding, is impossible due to the insufficient strength of the joint under shock loads.

Целью изобретени вл етс повышение эксплуатационной надежности устройства.The aim of the invention is to increase the operational reliability of the device.

Claims

For this, the tail portion of the device is made of a sleeve, a casing and a shock absorber interposed between them, wherein the sleeve is fixedly fixed in the device case by means of a cap nut, a casing and a shock absorber interposed between them, and the air supply hose is attached to the casing. In addition, the casing is made of a yoke and a flange rigidly interconnected. The drawing shows a pneumatic percussion device, a longitudinal section. The device has a housing 1, in which a stepped drummer 2, made with channels, and a tail section 3 are placed. A large drummer level 2 and a housing 1 form the front working chamber 4, and a smaller impactor stage and tails part of the device - a rear working chamber 5. Tail portion 3 is made of a sleeve 6, a casing 7 and a shock absorber 8 located between them. The casing 7 is made of a yoke 9 and a flange 10, rigidly interconnected, for example, by welding. An air supply hose 12 is connected to the flange 10 by means of a clamp 11 and a tape thread made in the flange 10. The sleeve 6 is fixedly fixed in the housing 1 by means of a cap nut 13. The exhaust channels 14 are made in the sleeve 6. The device operates as follows. Under the pressure of compressed air acting on the drummer 2 constantly from the rear working chamber 5 and periodically from the front working chamber 4, it performs a reciprocating motion in the housing 1 and strikes its front part. As a result of the impact on the case of shock load in the nodes and parts of the device, voltages arise that spread through the housing 1 and are transmitted to the sleeve 6, and then through the shock absorber 8, the casing 7. The shock absorber 8 significantly reduces the magnitude of the stresses, therefore its component parts - the holder 9 and the flange 10 of the voltage are significantly lower than in the sleeve b and the housing. Claim 1. Pneumatic percussion device for the formation of wells in the ground, including a housing in which a stepped impactor is installed, having air passage channels and reciprocating under the action of compressed air of working chambers fed into the device through an air inlet hose parts of the device, characterized in that, in order to increase the operational reliability of the device, its tail part is made of a sleeve, fixedly in the device case by means of a cap nut, a casing and a shock absorber placed between them, and an air supply hose is attached to the casing. 2. The device according to claim 1, characterized in that the casing is made of a yoke and a flange rigidly connected between one another. Sources of information taken into account during the examination 1. Author's certificate No. 534553, cl. E 02 F, 1972.

2. The copyright certificate number 496350, cl. E 02 D 5/18, 1973.

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