SU727753A1

SU727753A1 - Percussive-action pneumatic device

Info

Publication number: SU727753A1
Application number: SU772517202A
Authority: SU
Inventors: Владимир Петрович Богинский; Борис Николаевич Смоляницкий
Original assignee: Институт Горного Дела Со Ан Ссср
Priority date: 1977-08-15
Filing date: 1977-08-15
Publication date: 1980-04-15

Description

(54) ПНЕВМАТИЧЕСКОЕ УСТРОЙСТВО УДАРНОГО ДЕЙСТВИЯ(54) PNEUMATIC DEVICE OF SHOCK ACTION

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Изобретение относитс к области строительной техники и может быть использовано дл забивани в грунт гибких стержневых элементов, например, электродов заземлени , анкеров и т. п.The invention relates to the field of construction equipment and can be used for plugging flexible rod elements into the ground, for example, ground electrodes, anchors, etc.

Известно пневматическое устройство ударного действи , предназначенное, в основном , дл забивани гибких стержне выхэлементов, содержащее корпус, ступенчатый ударник, в осевом канале которого расположена трубка дл размещени в ней стержневого элемента, гайку, выполненную с каналами дл подвода и выхлопа воздуха. Между наружной поверхностью трубки и внутренней поверхностью ударника образован канал дл периодического сообщени камер рабочего и обратного ходов 1 .A pneumatic percussion device is known, mainly intended for plugging flexible exhaust rod, comprising a housing, a stepped impactor, in the axial channel of which a tube is placed for accommodating the core element, a nut made with air inlet and exhaust channels. A channel is formed between the outer surface of the tube and the inner surface of the striker for periodically communicating the working and returning chambers 1.

Однако ударник этого пневматического устройства имеет радиальный канал в меньшей своей ступени. Наличие канала снижает прочность ударника и, следовательно, надежность и срок службы устройства.However, the drummer of this pneumatic device has a radial channel in its lesser degree. The presence of the channel reduces the strength of the hammer and, therefore, the reliability and service life of the device.

Наиболее близким по технической сущности и достигаемому результату к предлагаемому вл етс пйевматическое устройство ударного действи , включающее полыйThe closest in technical essence and the achieved result to the proposed one is a percussion device of percussion action, including a hollow

корпус, установленный в его полости с возможностью возвратно-поступательного перемен ени под действием сжатого воздуха камер рабочего и обратного ходов ступенчатый ударник со сквозным каналом, размещенную в осевом канале трубку дл стержневого элемента , снабженную продольными пазами, образующую с внутренней поверхностью ударника канйлы дл сообщени камеры обратного хода с камерой рабочего хода, закрепленную на корпусе гайку с отверсти ми дл подачи воздуха.body mounted in its cavity with the possibility of reciprocating change under the action of compressed air of working and reversing chambers reverse with camera of working stroke, nut fixed on housing with air holes.

Дл выхлопа воздуха на наружной поверхности большей ступени ударника выполнен продольный паз, а в хвостовой части корЩса на внутренней его поверхности - расточка 2.For exhausting air, a longitudinal groove is made on the outer surface of the greater drummer stage, and a boring 2 is made in the tail section of the inner core on its inner surface.

Наличие расточки в корпусе и продольного паза в ударнике снижают прочность этих наиболее нагруженных деталей устройства , что отрицательно сказываетс на его надежности.The presence of a bore in the housing and a longitudinal groove in the drummer reduce the strength of these most loaded parts of the device, which negatively affects its reliability.

Цель изобретени - повыи1ение надежности и срока службы устройства.The purpose of the invention is to improve the reliability and service life of the device.

Claims

This is achieved by the fact that in a pneumatic percussion device, including a housing, in the cavity of which is installed, WITH the OPPORTUNITY of reciprocating movement under the action of compressed air of working and reversing chambers, a stepped impactor with a CENTRAL duct, a tube for a rod in the axial channel element, provided with longitudinal grooves, forming channels with the inner surface of the striker to communicate the return stroke chamber with the working stroke chamber, fixed to the body a nut with holes l supply air in the tube in the gaps between the grooves are holes for exhaust air. . - In FIG. Figure 1 shows schematically a pneumatic percussion device with the striker in the forward position; in fig. 2 shows section A-A in FIG. 1. The device includes a housing 1, a drummer 2 mounted in the cavity of the housing 1, a nut 3 covering the internal cavity of the housing 1, and a tube 4. The drummer 2 has a through axial channel 5. The tube 4 has grooves 6 on the outer surface, placed in the axial channel 5 of the striker 2 and forms channels 7 with it. There are also holes 8 in the tube, which are located between the slots 6. The drummer 2- forms the return stroke 9 with the housing 1 and the tube 4, and with the nut 3 and the tube 4 working stroke. A clamping device 11 is mounted on the front part of the device housing to be connected to the submersible element. An air supply hose 12 is connected to the nut 3. The device operates as follows. The hammer rod is passed through the tube 4, after which the device is fixed on it with the help of the clamping device 11. Compressed air; The vessel arrives along the hose 12 to the chamber 10 and acts on the face area of the striker 2. In the position of the striker 2 shown in FIG. 1, the compressed air from chamber 10 through channel 7 enters chamber 9. Since the area of the impactor, the net pressure from the chamber 9 is larger than its area, the net pressure is from the chamber 10, the hammer begins to move backwards (in Fig. 1 - to the right) . After overlapping the inner surface of the axial channel 5 of the grooves 6, the flow of air through the channel 7 into the kayer 9 stops, but the hammer 2 continues to move due to the energy of the air expanding in chamber 9. At the end of the return stroke, the inner surface of the axial channel 5 of the hammer 2 communicates with the atmosphere. The exhaust of air from chamber 9 occurs. After that, the air pressure in chamber 10 of the striker stops and then starts moving forward until the impact is struck on the front of the hull. In the forward position of the striker 2, the channel 7 opens, the compressed air enters the chamber 9 and the cycle repeats. Under the action of shocks inflicted by the striker 2 on the housing 1, the flexible rod, connected by means of the clamping device 11 with the housing, is immersed in the ground. After the device reaches the ground surface, it is stopped, moved upwards along the rod, fixed on it and the dive is continued. The use of the device allows an increase in labor productivity. The invention is a pneumatic percussion device, comprising a hollow body mounted in its cavity with the possibility of reciprocating movement of compressed air of working and reversing chambers with a stepped impactor with a through channel, a tube in the axial channel for the core element, provided with longitudinal grooves forming with the inner surface of the striker; channels for communicating the reversing chamber with the working stroke chamber, a nut with holes for air chi, characterized in that, with a view to the Enhance reliability and lifetime of the device, the tube in the intervals between the grooves are provided with openings for air exhaust. Sources of information taken into account in the examination 1. The author's certificate of the USSR in application No. 2356969/03, cl. E 02 D 7/02, 04/29/76.

2. USSR author's certificate for application No. 2425236/03, E 02 D 7/02, 10.06.76.

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