DE8405794U1 - Planetary rock drill head to be driven by a simple drill rod - Google Patents

Description

Patent attorney Eldnlbau / η ,. ^ phampu ^ o A , -. D, -4360 ReökHnghaueon 2 / door 665 *, * / · * ', Si »,. j \ ' .S «I *.;!, *. 24, Ptbr, £ 10Ö4

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S description!

The invention relates to a planetary Oestöinabbohrkopf with at least two to the length of the borehole Drive shafts arranged in parallel with holders for cutting drilling tools and one that can be rotated in a drill head housing («stored central shaft, which can be coupled with a simple drill rod and with the drive shafts via a planetary gear is in drive connection.

In a known planetary rock mount

this kind after the DS-PS 739,379 is the rotation of the Antriebswellenmit the recordings for the drilling rectified with the Drebainst the coupled to the drill center shaft and rectified with the intended circulation meaningful dee Bofaskopfgehätises · act UEE Seaktionsmofflente ά & ε Botewerkzeuge Thus the drive "atoment of the Bohrgeetäages. Because the Bialauf dee Bofcrkepfgehäueee eetaea the usually speslell "cutting * ^{1 designed} drilling tools a considerable resistance. Admittedly nothing is stated in this publication about the transmission ratio of the Plaaeteagetriebes between & ea Zetitralvelle and drive shafts, however sseigen

clearly geared up the representations

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ine Sehnalle. The basic V & itail dee planetary drill head, with increased speed of the Drill rods "and correspondingly reduced setting *" torque to maintain a marginal cutting speed for drilling tools, gene or weife β canceled.

Because Planaten-Qeeteinabbohrkupfe are Iq more diverse Bauwalee known at Vortriebemaeohinan, but where they are directly and with the drive machine while the drives are permanently connected. she then either have their own drive motors for the planets or at least two different torques transmitting connections to the drives * machine, namely one since β the drive torque to Rotation of the Oesamtgeeteinsbohrkopfes around a central shaft and on the other hand for a drive torque for the rotation of the Planetanaeheen with the Bohrwerkeaugen. This eliminates the particular problem of dee over hundreds of meters in these designs extendable drill pipe as the only drive means and thus also the resulting special design of the drill heads.

These are also rod-driven piano drill heads to differentiate, the planetary organs of which are formed by deep locbfe & aner, which thus do not have cutting, but mainly percussive drilling tools and accordingly in all their bmiart on a completely different torque cautiously aligned. With such, non-generic planetary rock drill heads

3§ their housing through the non-rotatable connected to them

Patent attorney Eichelbaurn, Mtehaejstraße 4 ... Q-4350 Recklinghausen 2

& XE 665a, b / 83 '· ^ί! · \ ·· j V ' ·' V ··; · Feb. 24, 1984 ^

Bobx linkage rotated directly, as disclosed, for example, in DE-AS 1,235,241.

In a planetary rock drill head of another type according to DE-PS 30 24 218 is extremely complicated Arrangement a second, coaxially arranged in the first drill string applied to a second To be able to transmit support torque to the drive machine and in this way via a gear transmission in the Drill head to force the beating drilling tools into rotation around the planetary axes. One of those too Planetary rock drill head arrangement can only be used on tunneling machines, but not on simple, Use extendable drill rods as they are not suitable for greater drilling depths is.

In DE-OS 24 49 108 planetary rock drill heads are also for connection to a simple drill pipe with at least partially cutting Drilling tools known · According to one embodiment, this previously known rock drill head also a non-rotatable connection of the central shaft with the drill head housing, thereby considerable Toreion forces are transmitted via the central shaft have to. On the other hand, the planetary drive here merely fulfills a drive function for the individual drilling tools among themselves. As a result, both their direction of rotation and their speed of rotation are different from the Sunn all · «vector effects on AU Werkaeuge Reaction forces and the resulting reaction

SUCH moments on the rock.

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Patent attorney Eicheibauin; Michaejsto-a / ge 4 - ,, D-43S0 Recklinghausen 2 door 665a, b / 83 V '": ' \ IV ^# i'V ·! · February 24, 1984

In another known planetary rock drill head according to DE-AS 21 27 653, the drive shafts are of the drilling tools with each other, but not geared to the drill rod. You therefore perform a rolling movement of the drilling tools on the bottom of the borehole in both types of embodiment and are not suitable for a "cutting" function and are therefore not of the generic type.

Based on this prior art, the

Invention based on the task, a planetary rock drill head of the type mentioned at the beginning, the one to achieve large drilling diameters with a light, extendable and simple drill rod can be driven by a relatively low torque, but at high speed and thus with high power can be driven without the cutting speed of the drilling tools on Rock becomes unfavorably high.

This task is carried out in connection with the

Initially mentioned generic term according to the invention thereby solved that all drilling tools opposite to the central shaft and with reduced Speed can be driven. By the feature that all drilling tools opposite the central shaft can be driven in opposite directions, they no longer have an inhibiting effect but support in the direction of the Drive torque. By the second characteristic that the Drilling tools compared to the central shaft with reduced Speed driven takes place between the central shaft and the drive shafts

Patent attorney Eichelbaum · Mjchaelstra, ße 4 _; , D _; 4350 Recklinghausen 2 //

txm 665a, b / 83 · ":: .., .j j '_# . ^s · X:.:. 2 *. Febr. 1984 q (j

a reduction takes place for the drilling tools via appropriately designed planetary gears. As a result This reduction and the resulting reduced speed can cause significant torques on the cutting Drilling tools and by dor-j. on the rock one accordingly high cutting performance can be exercised. Due to the counter-rotation and due to a gear reduction Drilling tools that cut with increased torque produce each one on the rock on its own a reaction torque which supports the rotary movement of the drill head housing around the central shaft. By this torque support succeeds in the drilling head housing, which is not directly driven, in to set the required orbital movement. Included can the four shoots subsidence, the number of Cutting tools on the individual circular paths and the respective size of the ring to be machined the bottom of the borehole are coordinated.

Although in the embodiment of FIG. 1 the

DE-OS 24 49 108 already has a planetary rock drill head described, whose central shaft coupled to the drill pipe two diametrically arranged drive shafts for the drilling tools once in counter-rotation and once more in synchronism. Through this the reaction torques of the individual drilling tools act against each other in pairs. As a result, in this publication a major degradation of the overall reaction has been revealed. Accordingly, there is also talk of a in this publication special drive in the form of an "electric motors im

Patent attorney Eichelbaum ,; y \\ & \ aeWreffr 4 -.JD, 4360 Recklinghausen 2 M

tu * 665a, b / 83 *. ^j: ·· .'i 5 ^# · ^: · Χ!.:. Feb. 24. ^1984/7 #

- Erdboden "to generate a forced circulation of the drill head housing. However, because of its otherwise lack of commercial use, such a drive must be assigned to the tunneling machines and not to the ^{drill heads of the type mentioned, which are driven by 5} extendable drill rods. The same applies to the fact that the planetary gears Point from the Zenvralwelle to the drive shafts of the drilling tools at high speed, which results in a relatively high drive torque and a low drive speed of the central shaft, which in turn runs counter to the use of extendable drill rods as drive means.

According to an advantageous development of the

Invention is in the direction of drilling in front of the drilling tools a directly driven pre-drill and / or extension drill arranged non-rotatably on the central shaft. This results in circular ring surfaces to be cut by the drilling tools. These circular ring surfaces can as a result of the gear reduction and the fact that only the two drilling tools and not also the drill head housing are driven, with a relatively large drilling diameter with relatively low drive torque at moderate cutting speed and relatively high speeds of the drill rod be cut out or peeled out in a short time unit. It turns out to be particularly advantageous as drilling tools planetary

Use cutting disks whose on them

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arranged son's oaths eye al the same arranged on the outer wall eehrimnaiftai trained and.

To obtain favorable soni «conditions, woau a rotation speed adapted to the other operating data of the drill head precision and thus the Planetary sohrameo discs belong to the central shaft, proves ae see old beaendere advantageous that Largest Durehmesier the saw head assembly a planetary vision, the yellow otete more strongly than that Width of the ring fly it streaked in Form rock. An optimization is done according to the hut that takes place oeetsine and ttber the construction of the tendons is possible. Well let it be

tg Completion of the task on hand, if the single planetary pulleys in the siel are arranged in a known manner in several levels one behind the other.

Changing Cestein proprietary rights, untereMedh

Borrowing symptoms of the Schnei <iwerk2euga and an irregular attack of the Cesteineboferkopf when drilling, the free circumference of the Adversely affect the behavior of the drill head. Xn sucheih In cases, let the task at hand be solved " particularly useful when pressing against the cylindrical borehole wall on the central shaft a support device provided with several radially symmetrically arranged support elements which is connected to the central

en shaft on the one hand and the drill head housing on the other

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Patent attorney HehaibAum .; Μΐ # ι · ΐ | # ι * βι 4 ·, 0 * 4880 ReckllnflHeuisn 2 et * r 665a, b / 83, »» ··, · j j V · j ··; ·. · .. Feb. 24, 1M4

connected is that seizure in a slow Bjrehung u & die Zcntealweila lot the same Drehetmi drivable iet. This creates the drill head housing in a forced circulation do the central *? · 11 · ge se tat. β Diets Absttttsvorriehtung and the swipe-free However, drinks need to be mislead because of the invention extensive torque compensation is only designed for a relatively low residual torque will. The support device can therefore be made relatively small and in the pilot hole, so not about ItB final large borehole, to be arranged » As a result, the support device is already effective when drilling, before the planetary Sahrämecheiben intervene in the rock.

The support elements advantageously consist of several replaced by an equal angle to each other, each under the action of a compression spring Calling with cutting edges, the longitudinal directions of which are parallel to the central shaft. The gear

Sf ssur connection of the distance with the central shaft and the Bohrkop £ housing is for example of a gear wheel connected to the support device with internal toothing, one in This IsBenveraateuag an intervening rifle

Drive shaft and one coaxial under the

Pinion located gear wheel formed, the vo «a non-rotatable on the Zeatralwelle arranged pinion is drivable.

There are several examples of the invention

ia shown in the drawings. Babel show:

Patent attorney Elehe & ium ■ Mlöhaalstrasse 4 · 0-4380 Raefelinghauien 2 tttiir MSa _v b / II "ij ;; *. Fj." J. / Μ. Feb. 24, 1984

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Fig. 1 is a first embodiment of the new one Flaneten-βθeteίaabohrkopfeβ at "iaise-boifing", left la side view, right in longitudinal section, Fig. 2 shows the flood on the new drill head

according to line 11/11 from Flg. 1, Fig. 3 shows a second embodiment of the new planetary drilling head with a pilot drill directly drilled out from the central shaft, an extension,

Bohrer, an Abetütavorriohtuog and etagenwelee adored each other very much · discs,

Fig. 4 shows the plan view along the line VI / VI of Fig. Zf

Flg. 5 the outer shape of Flg. 3 and 4

with two outer cutting disks rotated by 90 °, leaving the inner cutting disk,
6 shows the plan view along the line VI / VI

of Fig. 5.

In Figs. 1 and 2, an earliest embodiment is * fofiffl of the new Plaeieteo Gesteiflsbohskopfes 1 shown, der zum sienend ^ i Irweiterumgsbonsen amege 2g forms let. The zeatral wave 2 of this Plaaetea business

stelnebohrkopfes 1 is a centering 3 with the driving drill rod 4 connected. The central shaft 2 is freely rotatable with the bearings S la dem Bohrkopfgehäiise 6 stored. On the central shaft μ is rotatably arranged ice pinion 7 with the

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Pflttntfinwalt aichslbaum. MMiif {strait 4.-. Q-4380 Reekltnghausen 2

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Planettenzahnrädaτη 8 and 9 combs. As a result, the planetary rollers 10 and 11 rotatably mounted in the bearings 9 and, via the receptacle 12, the seh-rämeeheiben 13 and 14 are driven. The ßohrämtoheiben

β 13 »14 are provided with cutting edges 15 on their outer edge besetit. In addition to the central shaft 2 they are arranged diametrically opposite in order to compensate for the transverse and pressure forces au guarantee.

Vie in particular from Flg. 2 came, dareht the cutting disc 13 in the direction of Arrow 16 and the cutting disc 14 in the direction of arrow 17) whereas the central shaft 2 runs in opposite directions rotates in the direction of arrow 18. As a result, the cutting disks 13 and 14 rotate in opposite directions Central shaft 2. This mutually supporting rotary arrangement acts on the cutting disks 13, 14 exerted a moment of reaction during their engagement on the borehole bottom 19, which the drill head housing & slowly rotates in the direction of arrows 20. Shower this torque support succeeds it, the not directly driven drill head housing to set in the required omlanf movement. The C set-up of pinion 7 on the planet numbers 8, 9, the number of Boring cutters IS and the respective size of the annular surface to be machined on the borehole bottom 19 on top of one another be matched. To achieve a high Torque is essential, in contrast to the

of the prior art from the pinion 7 to the

Patent attorney Eicheibaum. Michaelstrasse 4 D-435Q Pecklinghausen 2 _Λ

twe §65a, b / 83 · "::" * .: "V * ^ 'W *. 1984 / JL

Planetary gears 8, 9 a reduction to slow speed and thus a reduced speed takes place. In Fig. 2, the pilot hole 21 according to FIG. 1 is indicated by dash-dotted lines, whereby the of the Circular area on the borehole bottom 19, between the pilot borehole, which brushes the inclined disks 13, 14 21 and the wall of the large borehole 22 can be seen.

Figs. 3 to 6 show a second embodiment

¹ ^ guide 23 of the new planetary rock drill head, which is provided with a pilot drill driven by the drill rod 24 directly via the central shaft 2 and an extension drill 26 for generating the pilot hole 27 and the extension drill hole. In this embodiment, a support device 29 is rotatably mounted on the central shaft 2, which is provided with several radially symmetrically arranged support elements 30, which consist of several runners 32 offset from one another by the same angle, each under the action of a compression spring 31 with cutting edges 33, the longitudinal directions of which are aligned parallel to the central shaft 2. As a result, the skids 32 with the chordal edges 33 are pressed against the wall of the Br extension bore 28. With this support device 29, a gear wheel 34 with internal toothing 35 is rotatably connected, which is connected to a rititel 36 which is connected to a planetary gear 37. On the

Planet shaft 37 is still a gear 38 III Il fill IlM Il f

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Patent attorney Eichelbaum Michaelstrasse 4. D-, 4350. Reckjir ^ ghausen 2 665a, b / 83 * _# . ^s: " _: * j

non-rotatably arranged, which is connected to a further, The pinion 39, which is arranged in a rotationally fixed manner on the drive shaft 2, meshes.

In Fig. 3, a further planetary shaft 40 is disclosed on which a gear wheel 41 and a Cutter disk 42 are arranged in a rotationally fixed manner. The gear wheel 41 is also controlled by the pinion 39 driven. The intermediate bore 43 is produced by the cutting disk 42. From Fig. 4 are the Main cutting disks 44 and 45 can be seen, which have been omitted in FIG. 3 for the sake of clarity. These cutting disks 44, 45 generate the main bore 46. The largest diameter is the The arrangement of the cutting tools 15 of a planetary cutting disc 44, 45 is always greater than the width B. the ring surface 47 in the rock, which is covered by it, which in turn is determined by the difference between the surfaces is formed between the large bore 46 and the intermediate bore 43.

In FIGS. 5 and 6, parts that correspond to FIGS. 3 and 4 are given the same reference numerals designated. From Fig. 5, the arrangement of the cutting disks 44, 45 can be seen. The ones further inside Horizontal cutting disk 42 of FIG. 3 has been omitted from FIG. 5 for the sake of clarity. in the In contrast to the exemplary embodiment in FIG. 1, the cutting disks 44, 45 with the ones driving them are now Gears on the. Plaaetenantritb - walls 48, 49 formed in one piece, with the Gear wheel 50, 51 all have one

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Patent attorney Eichelbaum · Michaelstrgße. 4 .. · D-.4350. Reefcifnghausen 2 _Λ

665a, b / 83 V "':": JW * j * H-sX984 JV

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Internal toothing 52 is carried out on the outer surface 53 the cutting edges 15 are arranged.

As can be seen from Fig. 5, combs a pinion 55 which is freely rotatably mounted on a shaft 54 and has internal toothing 52, with a Another gear 56 connected non-rotatably to the shaft 54 meshes with a pinion 57 of the drive shaft 2. As can be seen from Fig. 6, the cutting disks 44, 45 and 42 rotate in the same direction Directions according to arrows 58, 59, 60. The central shaft 2 rotates in the opposite direction to this in the direction of the Arrow 61. When the cutting disks 42, 44 and 45 engage in the rock to be cut, this occurs in connection with the drive torque of the central shaft reaction torque, which the gear housing 62 in Cause the direction of the arrows 63 to slowly rotate around the central shaft 2,

PattmtffiKilt itetwmium. MteftMlftaggo 4

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"Pl * neten-Gäiteinebohtkopf Bum drive shower tin simple "Behirgastange"

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Plan.fn-Oe.üoi ^ boring head 1 24 39 SS Cenfal wave 2 centering 3 38 Boiurgeetä ^ e 4th 36 37 40 reader 5 Boharkepf gehttuee 6th 9 42 44 Ritael 7th 11th 57 8th 14th 18th 20th 10 60 61 PleneteswellOTi 12th Atif would take 13th 17th 45 59 Sehsäm ^ are called 15th Drill sheaths 16 58 27 arrow 63 19th Bottom of the borehole 21 Pilot hole 22nd CroS borehole

Patent attorney Ilefnlbaum. Mlcha «letraße4. feut Ma *, b / I3 V

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Execution form of 23 41 50 51 Pilot drill 25th 52 Extension drill 26th Extension borehole 28 Abettite device 29 Abbey element 30th Compression spring 31 49 Call 32 Tendons 33 Gear wheel 34 Internal gearing 35 Intercooling 43 Main bore 46 Ring surface 47 Width of ridge 47 B. flaneteaaattriebswellett 48 Also a pool of 53 62 54 Gear housing 56 Bright gear

Claims (1)

Patent Attorney Eiehelbaum - Michaelstrasse 4 · Q-43S0 Recklinghausen 2 to * «$ 5 _a , b / 83 .-. :::; . Γ: · ":.:": F .. 24th party. 1984 Applicant: TÜRMÄ.G Turbo-Maschinen-Aktiengesellschaft t Nuts & Graves Wuppertaler Strasse 3, 4322 Sprockhövel 1 "Planetary rock drill head to drive a simple drill rod" 15th Expectations : 1. Planetary Geateinsbohrkopf with at least two drive shafts arranged parallel to the longitudinal axis of the drilling with holders for cutting drilling tools and with a rotatably mounted in a drill head housing Central shaft that can be coupled with a simple drill rod and via a planetary gear is in drive connection with the drive shafts, characterized in that all drilling tools (13, 14, 42, 44, 45) are opposite in the center of the population (2), in the opposite direction, child with diminished Speed are artraibbar. 30th ti ill «ti ti Patent attorney
gate attorney Eiehelbaiyji *. Wchaelstraie 4. · p-4350 ReckJinghausen 2 365a, b / 83 · ::. ·. · · · '. ^! · I ··.:.:. Feb. 24, 1984 2. Planetary rock drill head according to claim 1, characterized in that in the drilling direction in front of the drilling tools (42, 44, 45) a directly driven pilot drill (25) and / or the extension drill (26) is arranged in a rotationally fixed manner on the central shaft (2). 3. Planetary rock drill head according to claim 1 or 2, characterized in that that the drilling tools (13, 14, 42, 44, 45) consist of planetary cutting discs. 4. Planetary rock drill head according to claim 3, characterized in that that the cutting tools (15) arranged on the cutting disks (13, 14, 42, 44, 45) are circular cutting bits arranged on the outer edge of the cutting disks are formed. 5. Planetary rock drill head according to one of claims 1 to 4, characterized in that that the largest diameter of the cutting tool assembly is one of the planetary cutting disks (13, 14, 42, 44, 45) always greater than the width (B) of the ring surface it sweeps (47) is in the rock. 6. Planetary die head according to the Proverbs 1 to 5, characterized in that the individual planetary cutting disks (13, 14, 42, 44, 45) in a well-known orphan on several levels one behind the other Are arranged Pattntmwelt Blefielbaum · Mlchaeletraß © 4. 9-4350 fleckllnghaueen tu »6 * 5a, b / 83 'I I",. I {·, J. · ..;]. 24th Fete. 1 * 84 7. Planaten-Geetainebohtfkopf according to one of the Aneprütthe 1 to 6, characterized in that, to press against the cylindrical borehole wall (28) on the central shaft (2) S, one or more radial symmetries are arranged Ab · tut ae elements (30) approved Abe tut! Device (29) arranged, which via a gearbox so with the central shaft (2) on the one hand and the drill head housing (62) on the other hand is connected that the latter to (62) into a slow rotation around the central shaft (2) can be driven in the same direction of rotation. 8 «planetary stone drill head close to claim 7, characterized in that the Abetütselemente (30) from several to each other offset by an equal angle, depending on the effect a compression spring (31) standing calls (32) with cutting edges (33), their longitudinal directions parallel to the central shaft (2) are aligned «9« planetary ce rock drill head according to one of the Claims 1 to 8, characterized ge indicates that the support device (29) in the drilling direction in front of the plane of last planetary vision disk (44, 45) arranged is «ad ia a preliminary stage (28, 43) of the 6so8leciibob * img (46) intervenes. Patent lawyer Eldielbaum. MiehaelfitraUe 4 ■ D-4360 Rocklimahaueen 2 tw 665a, b / 83 '"i'" * i ^M | ^Wed. "'"' WY „ Θ 84 öS 794.7 .s!. · .. ⁸ * · ,. · I ' ¹ J, J 10. Planeeen-OaeteinsbohEkopf nooh mehi: #ran the claim «1 to 9, characterized in that the transmission arur connection of the support device (29) with the central shaft (2) and the Behrkopf häuee (62) from a rotating feet connected to the Abettitavorriehtung (29) gear (34) with Innett · toothing (35), a meshing with this internal toothing (35) pinion (36) drives a shaft (37) ^ land consists of a gearwheel (38) located coaxially under the pinion (36), which can be driven by a pinion (39) arranged on the central shaft (2) for rotation. 11. Plaaeten-Qeeteinebohrkopf after an odes several of claims 1 to 10, characterized characterized that the Sehsflotacheiben (44, 45) and the gears driving them on the planetary drive shafts (48, 49) are formed in one piece, the gear wheel (50) %> . designed as such with internal teeth (52) is, on the outer surface (53) of which the Bobrschneidea (IS) are arranged t ι u