EP0805258B1 - Mouton de forage réversible - Google Patents

Mouton de forage réversible Download PDF

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Publication number
EP0805258B1
EP0805258B1 EP97106977A EP97106977A EP0805258B1 EP 0805258 B1 EP0805258 B1 EP 0805258B1 EP 97106977 A EP97106977 A EP 97106977A EP 97106977 A EP97106977 A EP 97106977A EP 0805258 B1 EP0805258 B1 EP 0805258B1
Authority
EP
European Patent Office
Prior art keywords
steering
air
control
ram boring
tube
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 - Lifetime
Application number
EP97106977A
Other languages
German (de)
English (en)
Other versions
EP0805258A2 (fr
EP0805258A3 (fr
Inventor
Alfons Hesse
Gerhard Balve
Franz-Josef Püttmann
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.)
Tracto Technik GmbH and Co KG
Original Assignee
Tracto Technik GmbH and Co KG
Tracto Technik Paul Schmidt Spezialmaschinen KG
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 Tracto Technik GmbH and Co KG, Tracto Technik Paul Schmidt Spezialmaschinen KG filed Critical Tracto Technik GmbH and Co KG
Publication of EP0805258A2 publication Critical patent/EP0805258A2/fr
Publication of EP0805258A3 publication Critical patent/EP0805258A3/fr
Application granted granted Critical
Publication of EP0805258B1 publication Critical patent/EP0805258B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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 invention relates in particular to a ram boring machine for trenchless drilling of earth and for laying cables in the ground.
  • Such ram boring machines are also used when expanding Pilot holes and for destructive replacement of buried Tubes used; they have one in one Housing can be moved back and forth using compressed air self-controlling piston that uses its kinetic energy a front dead center position or in a rear Dead center position transfers to the housing. In this way the device can be forwarded or returned operate and, for example, when hitting a Ground obstacle or when drilling a blind hole in the Move reverse gear out of the earth hole.
  • a reversal is required braking the percussion piston in one front dead center position essentially without transmission its kinetic energy on the housing using the Operating air and a rearward relocation of the rear Dead center position, which ensures that the Percussion piston, for example, on its kinetic energy gives a rear inner collar of the housing.
  • the control sleeve is at the front end on the head tube and with its rear end on the control air tube slidably mounted and is with the help of Control air in the forward position and - after bleeding the reversing chamber - with the help of the in the work area of the Impact piston pending operating air in its Return position moved. This can work against the force of one the reversing chamber arranged spring happen.
  • the disadvantage here is that the reversal of three concentric parts, namely the head tube, the Control air pipe and the control sleeve is made.
  • the tripartite because not only requires an increased Effort, but also limits the outside diameter of the Rammers downwards because of the cross-section of the housing not just the working area of the percussion piston surrounding percussion piston jacket, but also the three concentric tubes and the ring channel for the Control air and the reversing chamber can be accommodated have to.
  • a compression spring can also be used the control air act on the control sleeve; she pushes this forward to the forward position.
  • vented Control line becomes the control box against the pressure of the Spring, from the operating pressure on the face of the Control box acts, pushed backwards. But it is necessary to reduce the operating pressure, so it can happen that the compression spring the control sleeve again advances, or this flies back and forth so that none reasonable operation is possible.
  • the invention is therefore based on the problem that to fix the aforementioned disadvantages and in particular a Pile ram with a reversal to create the fewer components and in the event of leakage the control air supply an automatic switching from Should ensure advance to return.
  • Control sleeve is guided and with a reversing chamber a control air line and a flow chamber with the Head tube communicates.
  • the Reversing chamber with control air and the flow chamber with Operating air supplied i.e. the control sleeve is in the one direction with the help of the control air and in the adjusted in another direction with the help of the operating air.
  • the control sleeve is preferably provided with an inner collar between two spaced apart Outer collar of the head tube. Create the collar two annular spaces between the control sleeve and the Head tube, one of which as a reversing and one as Flow chamber acts. To make this possible, Head tube in the area of an outer collar Control air duct and in the area of the other outer collar an operating air hole may be arranged.
  • the control air duct can be fitted with a duct in the head tube Control air line or with one in the Head tube wall running head tube channel connected his. In both cases there is an annulus between one Pull pipe and the surrounding soil for one Control air line not required because of Um Kunststoffschsch the control air is supplied from the inside.
  • the rear part of the control sleeve can be a smaller one Have outer diameters than the front part. This creates a step that acts as a control edge with the control openings in the percussion piston jacket cooperates and their location determines the point in time which the percussion piston reverses or Dead center position reached.
  • the ram boring machine is based on the construction and working principle considered as constructed like that in the German patent specification 21 57 259 described ram boring machine, procure its reversal differently is; it consists of a housing 1, in the rear Part of a stepped stop ring 2 with axially parallel Exhaust air ducts 3 is arranged. In the stop ring 2, a head tube 4 is fixed against rotation and displacement stored, the rear end with an operating air hose 5 is connected. The head tube 4 projects with its front end into one with control openings 6 provided chamber 7 of a percussion piston 8.
  • control tube 4 Between the control tube 4 and the percussion piston chamber 7 surrounding jacket 9 of the percussion piston 8 is located an axially movable control sleeve 10, the front part on a connected to the head tube 4 Outer collar 11 and its middle part on one another outer collar 12 of the head tube 4 is mounted.
  • the control sleeve 10 in turn has one between the two inner collars 13, 12 arranged inner collars. All collars are opposite to the associated ones Sealed sliding surfaces.
  • the head tube channel 17 is in Similar to the control air duct 16 with an in Carried inside the operating air hose 5 Control air line 19 connected. Both lines 18, 19 run wear-protected in a not shown Nachziehrohr.
  • the control tube 4 has one in the flow chamber 15 opening radial bore 20, over the operating air in the flow chamber 15 arrives.
  • the control sleeve 10 has a rear part smaller diameter than in the front part and accordingly a paragraph 21, which is an outflow of operating air the one located outside the percussion piston 8 Operating air space 22 in cooperation with the control holes 6 allowed through the exhaust air ducts 3.
  • the reversing chamber 14 is over during the forward run the control air line 18 and the control tube duct 17 and the control air line 19 is vented and is located accordingly the control sleeve 10 under the influence of in the Flow chamber 15 through the bore 20 effective Operating air in its front position (Fig. 2).
  • the reversing chamber 14 When switching from forward to reverse, the reversing chamber 14 via the control air line 18 and the Control air duct 16 or the control tube duct 17 and the Control air line 19 is charged with control air and on this way on the head tube 4 towards the rear in Fig. 3 shown return position. Remains there the control sleeve 10 until the control air in the Reversing chamber 14 is no longer effective. This can arbitrarily by switching off the control air and Vent the reversing chamber in such a way that the control air line via an external valve with the Atmosphere.
  • the reversal according to the invention also allows one automatic switching from forward to reverse when there is on the control line 18, 19 for a leak and accordingly for pressure equalization between the control line 18, 19 and the head tube 4 comes.
  • the reversing chamber 14 and the flow chamber 15 the same pressure, namely the operating air pressure; the in Comparison to the pressurized inner collar surface 23 overall larger front face 24 of the Control sleeve 10, however, causes the control sleeve 10 automatically moved into its return position (Fig. 3).
  • the operating air pressure changes the case because in chambers 7 and 15 always the same There is pressure. This ensures that the ram boring machine if the control air is lost automatically backwards from the one he created Earth hole moved out and the device in such cases not to be dug up or abandoned entirely needs.
  • the invention ensures this alone with the help of immediately between the percussion piston jacket 9 and the Head tube 4 guided control sleeve 10 without spring force and thus creates a reversal that leads to their Housing in the percussion piston chamber 7 a relatively requires a small cross-section.
  • the ram boring machine according to the invention is therefore characterized by high operational reliability and proportionate low manufacturing costs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Massaging Devices (AREA)

Claims (8)

  1. Mouton de forage en particulier pour la réalisation de forages dans le sol avec un piston frappeur (8) se déplaçant par mouvements d'aller et retour dans un carter (1), un tube de commande (4) pénétrant dans une chambre de piston frappeur (7), un manchon de commande (10) guidé sur le tube de commande et une chambre de changement de direction (14) reliée à une conduite d'air de commande (18, 19) caractérisé par une première chambre (15) en liaison avec le tube de commande, le manchon de commande étant déplacé dans une direction à l'aide de l'air de commande dans la chambre de changement de direction et dans l'autre direction à l'aide de l'air de service dans la première chambre.
  2. Mouton de forage selon la revendication 1, caractérisé en ce que le manchon de commande (10) est guidé avec un collet intérieur (13) entre deux collets extérieurs (11, 12) du tube de commande (4).
  3. Mouton de forage selon la revendication 1 ou 2, caractérisé en ce que, dans le tube de commande (4) dans la zone de l'un des collets extérieurs (11) se trouve un canal d'air de commande (16) et que dans la zone de l'autre collet extérieur (12) se trouve un trou de forage d'air de service (20).
  4. Mouton de forage selon l'une des revendications 1 à 3, caractérisé en ce que le canal d'air de commande (16) est relié à une conduite d'air de commande (18) passant dans le tube de commande (4).
  5. Mouton de forage selon l'une des revendications 1 à 3, caractérisé en ce que le canal d'air de commande (16) est relié par un canal de tube de commande (17) à une conduite d'air de commande (19).
  6. Mouton de forage selon l'une des revendications 1 à 5, caractérisé en ce que la partie arrière du manchon de commande (10) possède un diamètre extérieur plus petit que sa partie avant.
  7. Mouton de forage selon l'une des revendications 1 à 6, caractérisé en ce que le tube de commande (4) est muni d'au moins une pièce d'adaptation avec un canal d'air de commande (16).
  8. Mouton de forage selon la revendication 4, caractérisé en ce que la conduite d'air de commande (18) s'étend de façon coaxiale dans le tuyau flexible d'air de service (5).
EP97106977A 1996-05-02 1997-04-26 Mouton de forage réversible Expired - Lifetime EP0805258B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19617603A DE19617603C1 (de) 1996-05-02 1996-05-02 Umsteuerbares Rammbohrgerät
DE19617603 1996-05-02

Publications (3)

Publication Number Publication Date
EP0805258A2 EP0805258A2 (fr) 1997-11-05
EP0805258A3 EP0805258A3 (fr) 2000-04-12
EP0805258B1 true EP0805258B1 (fr) 2003-10-29

Family

ID=7793109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97106977A Expired - Lifetime EP0805258B1 (fr) 1996-05-02 1997-04-26 Mouton de forage réversible

Country Status (6)

Country Link
US (1) US5954145A (fr)
EP (1) EP0805258B1 (fr)
AU (1) AU720846B2 (fr)
CA (1) CA2204230A1 (fr)
DE (1) DE19617603C1 (fr)
PL (1) PL183735B1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2756003B1 (fr) * 1996-11-18 1998-12-24 Montabert Ets Dispositif de forage
EP1218617A2 (fr) * 1999-10-04 2002-07-03 Tracto-Technik GmbH Missile terrestre guidable
US6467554B1 (en) 2001-08-20 2002-10-22 The Charles Machine Works, Inc. Quick reverse mechanism for pneumatic boring tool
US6761231B1 (en) 2002-05-06 2004-07-13 The Charles Machines Works, Inc. Rotary driven drilling hammer
US6923270B1 (en) * 2004-04-15 2005-08-02 Earth Tool Company, L.L.C. Pneumatic impact piercing tool
DE102009038385B4 (de) * 2009-08-24 2014-05-28 Tracto-Technik Gmbh & Co. Kg Rammbohrvorrichtung mit einem pneumatischen Antrieb und einer hydraulischen Umsteuerung der Bewegungsrichtung
US9416593B2 (en) 2012-12-28 2016-08-16 Smith International, Inc. Piston strike face and bit interface for percussion hammer drill
DE102015008339A1 (de) * 2015-07-01 2017-01-05 Tracto-Technik Gmbh & Co. Kg "Rammbohrvorrichtung und Verfahren zum Umsteuern einer Rammbohrvorrichtung"

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2157259C3 (de) * 1971-11-18 1973-06-07 Tracto Technik Rammbohrgerät
FR2352161A1 (fr) * 1976-05-17 1977-12-16 Inst Gornogo Dela Sibirskogo O Dispositif a inversement de marche utilisant l'effet de frappe pour la realisation des trous dans le sol
DE2820785C2 (de) * 1978-05-12 1986-10-02 Paul 5940 Lennestadt Schmidt Ventilsteuerung für Rammbohrgeräte
SU1250619A1 (ru) * 1984-03-06 1986-08-15 Институт Горного Дела Со Ан Ссср Пневматическое реверсивное устройство дл образовани скважин в грунте
GB8801042D0 (en) * 1988-01-18 1988-02-17 British Telecomm Boring ram
CH680937A5 (fr) * 1989-01-12 1992-12-15 Terra Ag Tiefbautechnik
US5172771A (en) * 1990-11-06 1992-12-22 Charles Machine Works, Inc. Reversible impact-operated boring tool

Also Published As

Publication number Publication date
PL319720A1 (en) 1997-11-10
EP0805258A2 (fr) 1997-11-05
CA2204230A1 (fr) 1997-11-02
EP0805258A3 (fr) 2000-04-12
AU720846B2 (en) 2000-06-15
US5954145A (en) 1999-09-21
DE19617603C1 (de) 1997-09-18
PL183735B1 (pl) 2002-07-31
AU1994597A (en) 1997-11-06

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