EP0273974B1 - Dispositif pour percer des trous dans le sol - Google Patents

Dispositif pour percer des trous dans le sol Download PDF

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Publication number
EP0273974B1
EP0273974B1 EP86904469A EP86904469A EP0273974B1 EP 0273974 B1 EP0273974 B1 EP 0273974B1 EP 86904469 A EP86904469 A EP 86904469A EP 86904469 A EP86904469 A EP 86904469A EP 0273974 B1 EP0273974 B1 EP 0273974B1
Authority
EP
European Patent Office
Prior art keywords
threaded bushing
grooves
housing
striking element
ground
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86904469A
Other languages
German (de)
English (en)
Other versions
EP0273974A4 (fr
EP0273974A1 (fr
Inventor
Alexandr Dmitrievich Kostylev
Alexei Danilovich Terskov
Konstantin Borisovich Skachkov
Vladimir Dmitrievich Plavskikh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institut Gornogo dela Sibirskogo Otdelenia Akademii Nauk SSSR
Original Assignee
Institut Gornogo dela Sibirskogo Otdelenia Akademii Nauk SSSR
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institut Gornogo dela Sibirskogo Otdelenia Akademii Nauk SSSR filed Critical Institut Gornogo dela Sibirskogo Otdelenia Akademii Nauk SSSR
Priority to AT86904469T priority Critical patent/ATE48293T1/de
Publication of EP0273974A1 publication Critical patent/EP0273974A1/fr
Publication of EP0273974A4 publication Critical patent/EP0273974A4/fr
Application granted granted Critical
Publication of EP0273974B1 publication Critical patent/EP0273974B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers
    • E21B4/145—Fluid operated hammers of the self propelled-type, e.g. with a reverse mode to retract the device from the hole

Definitions

  • the present invention relates to compressed air actuated devices with impact effect used in construction, in particular to devices for driving holes in the ground.
  • this invention can be applied to devices designed to drill holes in soils to be compacted when trenchlessly laying underground utility lines under roads, fillings, and other structures.
  • the working element of a pneumatic drive-through is a cylindrical housing with an internal cavity, in which a striking element and an air distribution nozzle are accommodated.
  • the air distribution connection is connected to the housing by means of a threaded bush.
  • the striking element When the machine is running, the striking element performs a reciprocating movement in the axial direction under the action of the compressed air that enters the working chambers via the air distribution nozzle and strikes the front part of the housing with each working cycle, which in this way results in the soil is driven in, forming a hole with compacted walls.
  • the diameter of the bore is practically the same as the diameter of the housing of the pneumatic drive-through. During the operation of this pneumatic through drive, it is necessary to determine the threaded connection between the housing and the threaded bushing.
  • a device with an impact effect for driving boreholes in the ground is known (see “Pnevmoproboiniki i mashiny dlya zabivania v grunt legkikh stroitelnikh elementov” / Pneumatic punches and machines for driving light components into the ground, by AD Kostylev, KS Gurkov, BN Smolyanitsky , Novosibirsk, 1980, publisher «Nauka», p. 9), which contains a housing, a striking element and an air distribution nozzle.
  • the air distribution connector is connected to the housing by means of a threaded bush with a locking washer.
  • the invention is based on a further known device with impact action for driving boreholes in the ground (see “Pnevmoproboiniki i mashiny dlya zabivania v grunt legkikh stroitelnykh elementov” by AD Kostylev, KS Gurkov, BN Smolyanitsky, Novosibirsk, 1980, publisher “Nauka”, P. 10), which contains a housing, a striking element and an air distribution nozzle.
  • the air distribution connector is connected to the housing using a threaded bush.
  • the threaded connection between the housing and the threaded bushing is secured by the tapered surfaces of the same.
  • the device is characterized by a relatively low operational reliability because, due to the unscrewing of the threaded sleeve in the running device, the air distribution nozzle is displaced along the axis, which leads to a disturbance of the working cycle.
  • the axial rearward displacement of the air distribution nozzle results in the compressed air being released prematurely into the front chamber of the device and braking the striking element before the impact, which reduces the impact energy and consequently the work performance.
  • the front chamber of the device remains exposed to the pressure longer (the front edge of the air distribution nozzle has meanwhile been moved backwards).
  • the striking organ receives a greater kinetic energy, and after the later exhaust of the compressed air from the front chamber (the rear edge of the air distribution nozzle is also moved backwards), the striking organ travels a longer distance (the braking distance of the striking organ increases) and can take blows exert the front face of the threaded bush.
  • the striking member strikes both the front and the rear of the device due to the loosening of the threaded sleeve. This interferes with the working conditions of the device, which can lead to a reduction in the rate of advance until the device is completely stopped.
  • the invention has for its object to provide a device for advancing holes in the ground, in which the structural design of the threaded bushing can ensure the stabilization of the edges of the air distribution nozzle during operation of the device in the ground.
  • the essence of the invention is that in the device for advancing bores in the floor with a housing a reciprocating beating member is arranged, which forms a front chamber in the housing, which via openings in the beating member in its front position with a rear Connected chamber, which is formed by the cavity of the striker and an air distribution that is connected via an elastic element with a threaded bush mounted in the rear end of the housing and wherein the front chamber in the rear position of the striker with a room vented via at least one exhaust duct.
  • At least two grooves are machined on the outer surface of the threaded bushing, which are diametrically opposed to one another and run at an angle to the device axis, the direction of inclination of the grooves coinciding with the direction of the thread of the threaded bushing.
  • the design of the grooves at an angle to the axis of the device favors the generation (generation) of a circumferential force which fixes the threaded bushing in relation to the housing.
  • Such an embodiment of the device is extremely simple and suitable for production.
  • the grooves be at an angle between 30 to 60 degrees with the axis of the device.
  • the threaded bushing is reliably fixed with respect to the housing. It must be noted that the circumferential force can be adjusted by changing the angle of inclination of the grooves to the device axis.
  • the device for advancing bores in the ground has a hollow housing 1 (FIG. 1) with a striking member 2 arranged to be reciprocable therein.
  • the outer surface of the striking member 2 forms a front working chamber 3 with the housing 1
  • Rear working chamber 4 is provided, which is connected to the front working chamber 3 via openings 5 made in the wall of the striking element 2.
  • an air distribution nozzle 6 is accommodated, which is connected by means of an elastic element 7 to a threaded bushing 8 mounted in the housing 1 by means of a thread.
  • the rear working chamber 4 is formed by the cavity of the impact member 2 and the air distribution nozzle 6. Grooves 9 are incorporated on the outer surface of the threaded bushing 8 (FIG.
  • each of the grooves 9 is between 2 and 5% of the diameter of the threaded bushing 8.
  • the direction of inclination of the grooves 9 coincides with the threading direction of the threaded bushing 8.
  • Exhaust ducts 10 are provided in the elastic element 7. The compressed air is fed to the device via a hose 11.
  • the device for drilling holes in the ground works as follows.
  • the compressed air is supplied from the source of a pressurized gaseous medium (not shown) to the device via the hose 11 attached to the air distribution nozzle 6.
  • the compressed air Via the central channel of the air distribution nozzle 6, the compressed air enters the rear chamber 4 and flows through the openings 5 of the striking element 2 into the front chamber 3.
  • the compressed air is exhausted from the front chamber via the openings 5 of the impact member 2 and the channels 10 in the elastic element 7 into the atmosphere.
  • the striking member 2 comes to a standstill without causing a blow to the front end face of the threaded bushing 8 and begins to move forward (to the left in the drawing) until the openings 5 of the Impact member 2 have passed the front edge of the air distribution nozzle 6. As soon as the openings 5 are free, the striking element 2 strikes the front end face of the housing 1 and knocks it into the ground. Under the impact of the blows, the device moves in the ground and leaves a hole behind. Soil flows into the grooves 9 from the bore walls, which touch the outer surface of the threaded bushing 8.
  • the earth acts on the rear wall of the grooves 9 and generates a circumferential force which acts on the threaded bushing 8 and is directed towards the threading of the threaded bushing 8. Under the effect of this circumferential force, the threaded bushing 8 is always screwed into the housing 1. This ensures that the connection of the housing 1 and the threaded bushing 8 is undetachable.
  • the proposed invention relates to the field of construction technology and is intended for devices with impact action, which are used to advance holes in the ground for different purposes.
  • the application of the invention makes it possible to increase the operational safety of the device and to increase the reliability and service life of the construction thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Boring (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (4)

1. Dispositif pour percer des trous dans le sol, comprenant un carter (1 ) dans lequel un organe percuteur (2) est disposé mobile en va-et-vient et forme dans le carter une chambre avant (3) communiquant, par l'intermédiaire d'orifices (5) de l'organe percuteur (2), lorsque l'organe percuteur (2) se trouve en position avancée, avec une chambre arrière (4) formée par l'espace creux de l'organe percuteur (2) et une tubulure de répartition d'air (6), qui est reliée, par l'intermédiaire d'un élément élastique (7), à une douille filetée (8) montée à l'extrémité arrière du carter (1 ), la chambre avant (3) communiquant, lorsque l'organe percuteur est en position reculée, avec un espace mis à la purge, par l'intermédiaire d'au moins un canal d'échappement (10), caractérisé en ce qu'au moins deux rainures (9) sont pratiquées sur la surface extérieure de la douille filetée (8), sont diamétralement opposées l'une à l'autre et se développent en faisant un certain angle par rapport à l'axe du dispositif, la direction de la pente des rainures coïncidant avec la direction du pas du filetage de la douille filetée (8).
2. Dispositif pour percer des trous dans le sol selon la revendication 1, caractérisé en ce que les rainures (9) situées sur la surface extérieure de la douille filetée (8) s'étendent le long d'hélices.
3. Dispositif pour percer des trous dans le sol selon la revendication 1 ou 2, caractérisé en ce que l'angle de pente des rainures (9) situées sur la surface extérieure de la douille filetée (8) est compris entre 30 et 60° par rapport à l'axe du dispositif.
4. Dispositif pour percer des trous dans le sol selon l'une des revendications 1 à 3, caractérisé en ce que la profondeur de chacune des rainures (9) situées sur la surface extérieure de la douille filetée (8) est comprise entre 2 et 5% du diamètre de la douille filetée (8).
EP86904469A 1986-04-30 1986-04-30 Dispositif pour percer des trous dans le sol Expired EP0273974B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86904469T ATE48293T1 (de) 1986-04-30 1986-04-30 Vorrichtung zum bohren von loechern in den boden.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SU1986/000043 WO1987006638A1 (fr) 1986-04-30 1986-04-30 Dispositif pour percer des trous dans le sol

Publications (3)

Publication Number Publication Date
EP0273974A1 EP0273974A1 (fr) 1988-07-13
EP0273974A4 EP0273974A4 (fr) 1988-07-14
EP0273974B1 true EP0273974B1 (fr) 1989-11-29

Family

ID=21616995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86904469A Expired EP0273974B1 (fr) 1986-04-30 1986-04-30 Dispositif pour percer des trous dans le sol

Country Status (6)

Country Link
US (1) US4785898A (fr)
EP (1) EP0273974B1 (fr)
JP (1) JPS63503155A (fr)
AT (1) ATE48293T1 (fr)
DE (1) DE3667187D1 (fr)
WO (1) WO1987006638A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH677806A5 (fr) * 1987-12-30 1991-06-28 Terra Ag Tiefbautechnik
WO1990012164A1 (fr) * 1989-04-11 1990-10-18 Moskovskoe Nauchno-Proizvodstvennoe Obiedinenie Po Mekhanizirovannomu Stroitelnomu Instrumentu I Otdelochnym Mashinam Dispositif de perçage de trous dans le sol
GB9012639D0 (en) * 1990-06-06 1990-07-25 Kayes Allan G Soil displacement hammer with reversing mechanism
USRE36848E (en) * 1992-07-17 2000-09-05 Smith International, Inc. Air percussion drilling assembly
USRE36166E (en) * 1992-07-17 1999-03-30 Smith International, Inc. Air percussion drilling assembly for directional drilling applications
US5305837A (en) * 1992-07-17 1994-04-26 Smith International, Inc. Air percussion drilling assembly for directional drilling applications
GB2313643A (en) * 1996-05-31 1997-12-03 Inst Gornogo Dela Sibirskogo O Apparatus for impact action

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1486204A (fr) * 1967-10-04
US2631823A (en) * 1947-10-21 1953-03-17 Fred E Dannheim Pipe driving point
US2695673A (en) * 1952-07-21 1954-11-30 William E Coyle Well casing scraping tool
US3756328B1 (en) * 1970-01-19 1991-01-29 Pneumatically operated impact-action self-propelled mechanism
US3708023A (en) * 1970-12-30 1973-01-02 Inst Gornogo Dela Sibirskogo O Self-propelled air-punching mechanism
US3952813A (en) * 1975-02-07 1976-04-27 Nikolai Prokhorovich Chepurnoi Percussive device for driving holes in soil
US4171727A (en) * 1976-10-22 1979-10-23 Institut Gornogo Dela Sibirskogo Otdelenia Akademii Nauk S S S R Reversible, percussive device for ground perforation
DE2735062C2 (de) * 1977-10-03 1982-05-13 Institut gornogo dela Sibirskogo otdelenija Akademii Nauk SSSR, Novosibirsk Umsteuerbare pneumatische Schlagvorrichtung
SU1134674A1 (ru) * 1979-02-22 1985-01-15 Институт Горного Дела Со Ан Ссср Пневматическое устройство ударного действи дл образовани скважин в грунте
DE2911837C2 (de) * 1979-03-26 1986-09-11 Paul 5940 Lennestadt Schmidt Steuerung für selbstgetriebene Rammbohrgeräte
SU1139808A1 (ru) * 1980-04-23 1985-02-15 Институт Горного Дела Со Ан Ссср Реверсивное пневматическое устройство ударного действи дл пробивани скважин в грунте
SU1099016A1 (ru) * 1983-02-21 1984-06-23 Харьковский Автомобильно-Дорожный Институт Им.Комсомола Украины Устройство ударного действи дл образовани скважин в грунте
SU1250619A1 (ru) * 1984-03-06 1986-08-15 Институт Горного Дела Со Ан Ссср Пневматическое реверсивное устройство дл образовани скважин в грунте

Also Published As

Publication number Publication date
JPS63503155A (ja) 1988-11-17
DE3667187D1 (de) 1990-01-04
ATE48293T1 (de) 1989-12-15
WO1987006638A1 (fr) 1987-11-05
US4785898A (en) 1988-11-22
EP0273974A4 (fr) 1988-07-14
EP0273974A1 (fr) 1988-07-13

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