EP0273974A1 - Device for making holes in ground - Google Patents
Device for making holes in ground Download PDFInfo
- Publication number
- EP0273974A1 EP0273974A1 EP86904469A EP86904469A EP0273974A1 EP 0273974 A1 EP0273974 A1 EP 0273974A1 EP 86904469 A EP86904469 A EP 86904469A EP 86904469 A EP86904469 A EP 86904469A EP 0273974 A1 EP0273974 A1 EP 0273974A1
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- EP
- European Patent Office
- Prior art keywords
- housing
- grooves
- threaded sleeve
- threaded
- 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.)
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- 238000010009 beating Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 210000000056 organ Anatomy 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 241001417516 Haemulidae Species 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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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 soil to be compacted when trenchlessly laying underground utility lines beneath roads, fillings, and other structures.
- the working element of a pneumatic drive-through is a cylindrical housing with an internal cavity, in which an impact 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 ground is driven in, creating a hole with compressed heat.
- 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 impact action 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 ADKostylev, KSGurkov, BNSmolyanitsky, 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 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 in the working cycle.
- the axial rearward displacement of the air distribution nozzle causes the compressed air to be let out prematurely into the front chamber of the device and to brake 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 the front edge of the air distribution nozzle is now moved backwards).
- the sole organ receives a larger 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 shifted to the rear), the striking element sets a larger streoke (the braking distance of the striking element increases) and can strike exert on the front face of the threaded sleeve.
- the striking member strikes both the front and the rear of the device due to the loosening of the threaded sleeve.
- the working conditions of the device are disturbed, which can lead to a reduction in the driving speed until the device is completely stopped.
- the invention has for its object to provide a device for driving holes in the ground, in which the structural design of the threaded sleeve can ensure the stabilization of the edges of the air distribution nozzle when the device is operating in the ground.
- the essence of the invention is that in the device for advancing bores in the ground, which contains a housing with a reciprocatingly arranged in this striking element, which forms a front chamber in the housing, which has openings in the striking element with a rear chamber is connected, which is formed by the cavity of the impact member and the air distribution nozzle, which is connected via an elastic element to a threaded bushing mounted in the rear end of the housing, according to the invention, at least two grooves are machined on the outer surface of the threaded bushing, which are diametrically opposed to each other and extend at an angle to the device axis, the inclination direction of the grooves with the direction of the thread of the Ge - threaded bushing coincides.
- the design of the grooves at an angle to the axis of the device favors the generation (creation) of a circumferential force that the thread s e fixed in relation to the housing.
- Such an embodiment of the device is extremely simple and suitable for production.
- the grooves form an angle within 30 to 60 degrees with the axis of the device.
- the threaded bushing is reliably fixed in relation 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 3 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 a 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 through the cavity of the impact member 2 and the air distribution nozzle 6 educated. 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 driving 8 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. Via the central channel of the air distribution nozzle 6, the compressed air enters the front chamber 3 and flows through the openings 5 of the impact device 2 into the front chamber 3. As a result of the difference in area of the impact member 2 on the side of the front chamber 3 and the rear chamber 4, this becomes Percussion organ pushed back (to the right in the drawing). After the openings 5 of the impact member 2 have passed the rear edge of the air distribution nozzle 6, the compressed air is exhausted from the front chamber 3 via the openings 5 of the impact member 2 and the channels 10 in the elastic element 7 into the atmosphere.
- the sole 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.
- the striking element 2 strikes the front end face of the housing 1 and knocks it into the ground. Under the effect of the blows, the device moves in the ground and leaves a hole behind. Flows out of the bore walls that touch the outer surface of the threaded bushing 8 Soil into the grooves 9.
- 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 peripheral 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.
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- 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)
Abstract
Le dispositif comporte un boîtier (1), un percuteur (2) monté à l'intérieur de celui-ci et muni d'ouvertures (5), un manchon de distribution d'air (6), un élément élastique (7) et un manchon fileté (8). La surface extérieure du manchon fileté (8) est doté de rainures (9) orientées à un angle par rapport à l'axe du dispositif. De la terre entre dans les rainures (9) du manchon fileté (8) pendant le déplacement du dispositif, et crée une force périphérique qui immobilise le manchon fileté (8) par rapport au boîtier (1).The device comprises a housing (1), a striker (2) mounted inside of it and provided with openings (5), an air distribution sleeve (6), an elastic element (7) and a threaded sleeve (8). The outer surface of the threaded sleeve (8) has grooves (9) oriented at an angle to the axis of the device. Earth enters the grooves (9) of the threaded sleeve (8) during movement of the device, and creates a peripheral force which immobilizes the threaded sleeve (8) relative to the housing (1).
Description
Die vorliegende Erfindung bezieht sich auf im Bauwesen eingesetzte druckluftbetätigte Vorrichtungen mit Schlagwirkung, insoesondere auf Vorrichtungen zum Vortreiben von Bohrungen im Boden.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.
Am effektivsten kann diese Erfindung in Vorrichtungen angewendet werden, die zum vortreiben von Bohrungen in zu verdichtenden Böden beim grabenlosen Verlegen unterirdischer Versorgungsleitungen unter Straßen, Aufschüttungen und sonstigen Bauwerken bestimmt sind.Most effectively, this invention can be applied to devices designed to drill holes in soil to be compacted when trenchlessly laying underground utility lines beneath roads, fillings, and other structures.
Zum Vortreiben von Bohrungen in zu verdichtenden Böden werden selbstfahrende druckluftbetätigte Maschinen mit Schlagwirkung - pneumatische Durchtreiber - weitgehend verwendet. Das Arbeitsorgan eines pneumatischen Durchtreibers ist ein zylindrisches Gehäuse mit innerem Hohlraum, in welchem ein Schlagorgan und ein Luftverteilungsatutzen untergebracht sind. Bei diesem Typ des pneumatischen Durchtreibers ist der Luftverteilungsstutzen an das Gehäuse mittels einer Gewindebüchse angeschlossen.Self-propelled compressed air-operated machines with pneumatic impact are largely used to drive holes in soils to be compacted. The working element of a pneumatic drive-through is a cylindrical housing with an internal cavity, in which an impact element and an air distribution nozzle are accommodated. In this type of pneumatic drive through, the air distribution connection is connected to the housing by means of a threaded bush.
Beim Laufen der Maschine vollführt das Schlagorgan unter der Wirkung der Druckluft, die in die Arbeitskammern über den Luftverteilungsstutzen eintritt, eine hin- und hergehende Bewegung in axialer Richtung und übt bei jedem Arbeitszyklus einen Schlag auf das Vorderteil des Gehäuses aus, welches auf diese Weise in den boden eingetrieben wird, wodurch eine Bohrung mit verdichteten Wärden gebildet wird. Der Durchmesser der Bohrung ist praktisch dem Durchmesser des Gehäuses des pneumatischen Durchtreibers gleich. Während des Betriebs dieses pneumatischen Durchtreibers ist es erforderlich, die Gewindeverbindung Gehäuse - Gewindebüchse festzustellen.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 ground is driven in, creating a hole with compressed heat. 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.
Zugrundeliegender Stand der TechnikUnderlying state of the art
Es ist eine Vorrichtung mit Schlagwirkung zum Vortreiben von Bohrungen im Boden bekannt (siehe "Pnevmoproboiniki i mashiny dlya zabivania v grunt legkikh stroitelnikh elementov" /Pneumatische Durchtreiber und Maschinen zum Einschlagen von leichten Bauelementen in den Boden/ , von A.D.Kostylev, K.S.Gurkov, B.N.Smolyanitsky, Novosibirsk, 1980, Verlag "Nauka", S. 9), die ein Gehäuse, ein Schlagorgan und einen Luftverteilungsstutzen enthält. Der Luftverteilungsstutzen ist an das Gehäuse mittels einer Gewindebüchse mit einer Sicherungsscheibe angeschlossen. Beim Betrieb der Vorrichtung entsteht die Notwendigkeit, die Gewindeverbindung Gehäuse - Gewindebüchse zwecks Wartung, Reparatur u.dgl. zu zerlegen, wobei die Sicherungsscheibe nach zwei bis drei Zerlegungen zerstört wird.A device with impact action 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 ADKostylev, KSGurkov, BNSmolyanitsky, 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. When operating the device, there is a need to remove the threaded connection housing - threaded bushing for maintenance, repair and the like. to disassemble, the lock washer being destroyed after two to three disassemblies.
Es ist eine weitere Vorrichtung mit Schlagwirkung zum vortreiben von Bohrungen im Boden bekannt (siehe "Pnevmoproboiniki i mashiny dlya zabivania v grunt legkikh strcitelnykh elementov" von A.D.Kostylev, K.S.Gurkov, B.N.Smo- lyanitsky, Novosibirsk, 1980, Verlag "Nauka", S. 10), die ein Gehäuse, ein Schlagorgan und einen Luftverteilungsstutzen enthalt. Der Luftverteilungsstutzen ist an das Gehäuse mit Hilfe einer Gewindebüchse angeschlossen. Die Gewindeverbindung Gehäuse - Gewindebüchse wird durch gekoppelte Kegelflächen derselben gesichert.Another device with impact action for driving boreholes in the ground is known (see "Pnevmoproboiniki i mashiny dlya zabivania v grunt legkikh strcitelnykh elementov" by ADKostylev, KSGurkov, BNSmolyanitsky, 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.
Wegen Vibrationen und Stößen, welchen die Vorrichtung beim Betrieb ausgesetzt wird, findet eine Abschwächung der sichernden Reibungskräfte statt; demzufolge funktioniert die Gewindeverbindung eine Weile im nichtgesicherten Zustand, was zum Ausfall des Gewindes führt.Because of vibrations and shocks to which the device is exposed during operation, the securing friction forces are weakened; as a result, the threaded connection functions for a while in the unsecured state, which leads to the failure of the thread.
Außerdem treten an der kegelige Seite des Gehäuses große Radialkräfte auf, welche die Zerstörung des Gehäuses zur Folge haben.In addition, large radial forces occur on the conical side of the housing, which result in the destruction of the housing.
Darüber hinaus kennzeichnet sich die Vorrichtung durch eine verhältnismäßig niedrige Betriebszuverlässigkeit, weil wegen des Losdrehens der Gewindebüchse in der laufenden Vorrichtung der Luftverteilungsstutzen längs der Achse verschoben wird, was eine Störung des Arbeitszyklus herbeiführt. Die axiale rückwärtige Verschiebung des Luftverteilungsstutzens führt dazu, daß die Druckluft vorzeitig in die vordere Kammer der Vorrichtung ausgelassen wird und das Schlagorgan vor dem Stoß abbremst, was die Schlagenergie und folglich die Arbeitsleistung herabsetzt. Bei der rückläufigen Bewegang des Schlagorgans bleibt die vordere Kammer der Vorrichtung dem Druck länger ausgesetzt (die vordere Kante des Luftvertellungsstutzene ist inzwischen nach rückwärts verschoben). Deshalb erhält das Sohlagorgan eine größere Bewegungsenergie, und nach dem späteren Auspuff der Druckluft aus der vorderen Kammer (die hintere Kante des Luftverteilungsstutzene ist ebenfalls, nach rückwärte verschoben) legt das Schlagorgan eine größere Streoke (der Bremsweg des Schlagorgane nimmt zu) zurüok und kann Schläge auf die vordere Stirnseite der Gewindebüchse ausüben. Somit versetzt das Schlagorgan wegen des Losdrehens der Gewindebüohse Schläge sowohl auf das Vorder- als auch auf das Hinterteil der Vorrichtung. Dadurch werden die Arbeitsbedingungen der Vorrichtung gestört, was zur Verminderung der vortriebsgeschwindigkeit bis zur vollständigen Stillsetzung aer Vorrichtung führen kann.In addition, 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 in the working cycle. The axial rearward displacement of the air distribution nozzle causes the compressed air to be let out prematurely into the front chamber of the device and to brake the striking element before the impact, which reduces the impact energy and consequently the work performance. When the striking organ declines, the front chamber of the device remains exposed to the pressure longer (the the front edge of the air distribution nozzle is now moved backwards). Therefore, the sole organ receives a larger 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 shifted to the rear), the striking element sets a larger streoke (the braking distance of the striking element increases) and can strike exert on the front face of the threaded sleeve. Thus, the striking member strikes both the front and the rear of the device due to the loosening of the threaded sleeve. As a result, the working conditions of the device are disturbed, which can lead to a reduction in the driving speed until the device is completely stopped.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorriohtung zum Vortreiben von Bohrungen im Boden zu schaffen, bei welcher die konstruktive Ausführung der Gewindebüohse die Stabilisierung der Kanten des Luftverteilungsstutzens beim Betrieb der Vorrichtung im Boden sicherstellen kann.The invention has for its object to provide a device for driving holes in the ground, in which the structural design of the threaded sleeve can ensure the stabilization of the edges of the air distribution nozzle when the device is operating in the ground.
Das Wesen der Erfindung besteht darin, daß in der Vorrichtung zum Vortreiben von Bohrungen im Boden, die ein Gehäuse mit einem in diesem hin- und herbewegbar angeordneten Schlagorgan enthält, das im Gehäuse sine vordere Kammer bildet, welche über Öffnungen im Schlagorgan mit einer hinteren Kammer in Verbindung steht, die durch den Hohlraum des Schlagorgans und den Luftverteilungsstutzen gebildet ist, der über ein elastisches Element mit einer im rüokwärtigen Ende des Gehäuses montierten Gewindebüchse verbunden ist, erfindungsgemäß an der Außenfläche der Gewindebüchse mindestens zwei Rillen eingearbeitet sind, welche zueinander diametral entgegengesetzt und unter einem Winkel zur Vorrichtungsachse verlaufen, wobei die Neigungsrichtung der Rillen mit der Richtung des Gewindeganges der Ge- windebüchse zusammenfällt. Die Ausführung der Rillen unter einem winkel zur Achse der Vorrichtung begünstigt die Erzeugung (Entstehung) einer Umfangskraft, die die Gewindebüch- se in bezug auf das Gehäuse fixiert.The essence of the invention is that in the device for advancing bores in the ground, which contains a housing with a reciprocatingly arranged in this striking element, which forms a front chamber in the housing, which has openings in the striking element with a rear chamber is connected, which is formed by the cavity of the impact member and the air distribution nozzle, which is connected via an elastic element to a threaded bushing mounted in the rear end of the housing, according to the invention, at least two grooves are machined on the outer surface of the threaded bushing, which are diametrically opposed to each other and extend at an angle to the device axis, the inclination direction of the grooves with the direction of the thread of the Ge - threaded bushing coincides. The design of the grooves at an angle to the axis of the device favors the generation (creation) of a circumferential force that the thread s e fixed in relation to the housing.
Es ist zweckmäßig, die Rillen an der Außenfläche der Gewindebüchse längs einer Schraubenlinie auszuführen.It is expedient to make the grooves on the outer surface of the threaded sleeve along a helix.
Eine solche Ausführung der Vorrichtung ist äußerst einfach und fertlgungsgerecht.Such an embodiment of the device is extremely simple and suitable for production.
Es ist wünschenswert, daß die Rillen mit der Achse der Vorrichtung einen Winkel innerhalb von 30 bis 60° einschließen.It is desirable that the grooves form an angle within 30 to 60 degrees with the axis of the device.
Bei einer derartigen Ausführung der Rillen ist die Gewindebüchse in Bezug auf das Gehäuse zuverlässig fixiert. Es muß bemerkt werden, daß durch Änderung des Neigungswinkels der Rillen zur Vorrichtungsachse die Umfangskraft eingestellt werden kann.With such a design of the grooves, the threaded bushing is reliably fixed in relation 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.
Es ist wünschenswert, die Rillen solcherweise auszubilden, daß ihre Tiefe zwischen 2 und 5% vom Durchmesser der Gewindebüchse beträgt.It is desirable to form the grooves such that their depth is between 2 and 5% of the diameter of the threaded sleeve.
Dadurch entsteht eine Umfangskraft, die die Gewindebüchse bezüglich des Gehäuses zuverlässig fixieren kann.This creates a circumferential force that can reliably fix the threaded bush with respect to the housing.
Kurze · Beschreibung der ZeichnungenBrief description of the drawings
Im folgenden wird die Erfindung durch eingehende Beschreibung eines konkreten Ausführungsbeispiel derselbenIn the following, the invention will be described in detail by describing a concrete embodiment of the same
und an Hand der Zeichnungen erläutert; es zeigt:
- Fig. 1 einen Längsschnitt der Vorrichtung;
- Fig. 2 den Schnitt nach Linie II - II in Fig. 1.
- 1 shows a longitudinal section of the device.
- 2 shows the section along line II - II in Fig. 1st
Beste Ausführungsform der ErfindungBest embodiment of the invention
Die Vorrichtung zum Vortreiben von Bohrungen im Boden besitzt ein hohles Gehäus3 1 (Fig. 1) mit einem in diesem hin- und herbewegbar angeordneten Schlagorgan 2. Die Außenfläche des Schlagorgans 2 bildet mit dem Gehäuse 1 eine vordere Arbeitskammer 3. Im Scnlagorgan 2 ist eine hintere Arbeitskammer 4 vorgesehen, die mit der vorderen Arbeitskammer 3 über in der Wand des Schlagorgans 2 ausgeführte Öffnungen 5 verbunden ist. In der hinteren Arbeitskammer 4 ist ein Luftverteilungsatutzen 6 untergebracht, der mittels eines elastischen Elementes 7 mit einer im Gehäuse 1 mit Hilfe eines Gewindes montierten Gewindebüchse 8 verbunden ist. Die hintere Arbeitskammer 4 ist durch den Hohlraum des Schlagorgans 2 und den Luftverteilungsstutzen 6 gebildet. An der Außenfläche der Gewindebüchse 8 (Fig. 2) sind Rillen 9 eingearbeitet, die unter einem Winkel von 30 bis 60° zur Vorrichtungsachse verlaufen. Die Tiefe jeder der Rillen 9 beträgt zwischen 2 und 5 % vom Durchmesser der Gewindebüchse 8. Die Neigungsrichtung der Rillen 9 fällt mit der Gewindegangrichtung der Gewindebüchse 8 zusammen. Im elastischen Element 7 sind Auspuffkanäle 10 vorgesehen. Die Druckluft wird der Vorrichtung über einen Schlauch 11 zugeführt .The device for advancing bores in the ground has a hollow housing 3 1 (FIG. 1) with a
Die Vorrichtung zum Vortreiben von 8ohrungen im Bcden funktioniert folgendermaßen.The device for driving 8 holes in the ground works as follows.
Die Druckluft wird von der Quelle eines unter Druck stehenden gasförmigen Mediums (nicht gezeigt) zu der Vorrichtung über den am Luftverteilungsstutzen 6 befestigten Schlauch 11 zugeführt. Uber den zentralen Kanal des Luftverteilungsstutzens 6 gelangt die Druckluft in die vordere Kammer 3 und strömt durch die Öffnungen 5 des Schlagorgangs 2 in die vordere Kammer 3. Infolge der Flächendifferenz des Schlagorgans 2 auf der Seite der vorderen Kammer 3 und der hinteren Kammer 4 wird das Schlagorgan zurückgeschoben (in der Zeichnung nach rechts). Nachdem die Öffnungen 5 des Schlagorgans 2 die hintere Kante des Luftverteilungsstutzens 6 passiert haben, erfolgt der Auspuff der Druckluft aus der vorderen Kammer 3 über die Öffnungen 5 des Schlagorgans 2 und die Kanäle 10 im elastischen Element 7 in die Atmosphäre. Unter dem in der hinteren Kammer 4 wirkenden Luftdruck kommt das Sohlagorgan 2 zum Stillstand, ohne einen Schlag auf die vordere Stirnfläche der Gewindebüchse 8 zu versetzen, und beginnt sich vorwärts (in der Zeichnung nach links) so lange zu verschieben, bis die Öffnungen 5 des Schlagorgans 2 die vordere Kante des Luftverteilungsstutzens 6 passiert haben. Sobald die Öffnungen 5 frei sind, übt das Schlagorgan 2 einen Schlag auf die vordere Stirnfläche des Gehäuses 1 aus und schlägt dieses in den Boden ein. Unter der Wirkung der Schläge verschiebt sich die Vorrichtung im Boden und läßt eine Bohrung hinter sich zurück. Aus den Bohrungswänden, die sich mit der Außenfläche der Gewindebüchse 8 berühren, fließt Erdreich in die Rillen 9 hinein. Da die Rillen 9 unter einem Winkel zur Vorrichtungsachse (und zur Bohrungsachse) verlaufen, wirkt die Erde auf die Hinterwand der Rillen 9 ein und erzeugt eine Umfangskraft, die an der Gewindebüchse 8 angreift und nach dem Gewindegang der Gewindebüchse 8 gerichtet ist. Unter der Wirkung dieser Umfangskraft wird die Gewindebüchse 8 stets ins Gehäuse 1 eingedreht. Hierdurch wird gewährleistet, daß die Verbindung des Gehäuses 1 und der Gewindebüchse 8 unlösbar ist.The compressed air is supplied from the source of a pressurized gaseous medium (not shown) to the device via the
Die vorgeschlagene Erfindung bezieht sich auf das Gebiet der Bautechnik und ist für Vorrichtungen mit Schlagwirkung bestimmt, die zum Vortreiben von Bohrungen unterschiedlicher Zweckbestimmung im Boden eingesetzt werden. Die Anwendung der Erfindung gestattet es, die Betriebssicherheit der Vorrichtung zu steigern sowie die Zuverlässigkeit und Lebensdauer der Konstruktion derselben zu erhöhen.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.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT86904469T ATE48293T1 (en) | 1986-04-30 | 1986-04-30 | DEVICE FOR DRILLING HOLES IN THE GROUND. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/SU1986/000043 WO1987006638A1 (en) | 1986-04-30 | 1986-04-30 | Device for making holes in ground |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0273974A1 true EP0273974A1 (en) | 1988-07-13 |
| EP0273974A4 EP0273974A4 (en) | 1988-07-14 |
| EP0273974B1 EP0273974B1 (en) | 1989-11-29 |
Family
ID=21616995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP86904469A Expired EP0273974B1 (en) | 1986-04-30 | 1986-04-30 | Device for making holes in ground |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4785898A (en) |
| EP (1) | EP0273974B1 (en) |
| JP (1) | JPS63503155A (en) |
| AT (1) | ATE48293T1 (en) |
| DE (1) | DE3667187D1 (en) |
| WO (1) | WO1987006638A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990012164A1 (en) * | 1989-04-11 | 1990-10-18 | Moskovskoe Nauchno-Proizvodstvennoe Obiedinenie Po Mekhanizirovannomu Stroitelnomu Instrumentu I Otdelochnym Mashinam | Device for making holes in the ground |
| WO1991019073A1 (en) * | 1990-06-06 | 1991-12-12 | Kayes Allan G | Soil displacement hammer with reversing mechanism |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH677806A5 (en) * | 1987-12-30 | 1991-06-28 | Terra Ag Tiefbautechnik | |
| US5305837A (en) * | 1992-07-17 | 1994-04-26 | Smith International, Inc. | Air percussion drilling assembly for directional drilling applications |
| USRE36166E (en) * | 1992-07-17 | 1999-03-30 | Smith International, Inc. | Air percussion drilling assembly for directional drilling applications |
| USRE36848E (en) * | 1992-07-17 | 2000-09-05 | Smith International, Inc. | Air percussion drilling assembly |
| GB2313643A (en) * | 1996-05-31 | 1997-12-03 | Inst Gornogo Dela Sibirskogo O | Apparatus for impact action |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2631823A (en) * | 1947-10-21 | 1953-03-17 | Fred E Dannheim | Pipe driving point |
| FR1486204A (en) * | 1967-10-04 | |||
| US3952813A (en) * | 1975-02-07 | 1976-04-27 | Nikolai Prokhorovich Chepurnoi | Percussive device for driving holes in soil |
| US4132277A (en) * | 1977-10-03 | 1979-01-02 | Tupitsyn Konstantin K | Pneumatic reversible impact device for driving holes in soil |
| US4295533A (en) * | 1979-03-26 | 1981-10-20 | Paul Schmidt | Pneumatically operated ram borer |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| SU1134674A1 (en) * | 1979-02-22 | 1985-01-15 | Институт Горного Дела Со Ан Ссср | Pneumatic percussive device for making holes in soil |
| SU1139808A1 (en) * | 1980-04-23 | 1985-02-15 | Институт Горного Дела Со Ан Ссср | Reversible percussive pneumatic drive for sinking holes in soil |
| SU1099016A1 (en) * | 1983-02-21 | 1984-06-23 | Харьковский Автомобильно-Дорожный Институт Им.Комсомола Украины | Percussive apparatus for making holes in soil |
| SU1250619A1 (en) * | 1984-03-06 | 1986-08-15 | Институт Горного Дела Со Ан Ссср | Reversible pneumatic device for making holes in soil |
-
1986
- 1986-04-30 AT AT86904469T patent/ATE48293T1/en not_active IP Right Cessation
- 1986-04-30 US US07/159,970 patent/US4785898A/en not_active Expired - Fee Related
- 1986-04-30 JP JP61503596A patent/JPS63503155A/en active Pending
- 1986-04-30 EP EP86904469A patent/EP0273974B1/en not_active Expired
- 1986-04-30 DE DE8686904469T patent/DE3667187D1/en not_active Expired - Lifetime
- 1986-04-30 WO PCT/SU1986/000043 patent/WO1987006638A1/en active IP Right Grant
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1486204A (en) * | 1967-10-04 | |||
| US2631823A (en) * | 1947-10-21 | 1953-03-17 | Fred E Dannheim | Pipe driving point |
| US3952813A (en) * | 1975-02-07 | 1976-04-27 | Nikolai Prokhorovich Chepurnoi | Percussive device for driving holes in soil |
| US4132277A (en) * | 1977-10-03 | 1979-01-02 | Tupitsyn Konstantin K | Pneumatic reversible impact device for driving holes in soil |
| US4295533A (en) * | 1979-03-26 | 1981-10-20 | Paul Schmidt | Pneumatically operated ram borer |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO8706638A1 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990012164A1 (en) * | 1989-04-11 | 1990-10-18 | Moskovskoe Nauchno-Proizvodstvennoe Obiedinenie Po Mekhanizirovannomu Stroitelnomu Instrumentu I Otdelochnym Mashinam | Device for making holes in the ground |
| US5133416A (en) * | 1989-04-11 | 1992-07-28 | Dobroselsky Petr V | Device for drilling holes in the ground |
| WO1991019073A1 (en) * | 1990-06-06 | 1991-12-12 | Kayes Allan G | Soil displacement hammer with reversing mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1987006638A1 (en) | 1987-11-05 |
| EP0273974A4 (en) | 1988-07-14 |
| US4785898A (en) | 1988-11-22 |
| JPS63503155A (en) | 1988-11-17 |
| ATE48293T1 (en) | 1989-12-15 |
| EP0273974B1 (en) | 1989-11-29 |
| DE3667187D1 (en) | 1990-01-04 |
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