DE19925730C1 - Pressure drill rod for pressure drilling plant uses hollow drill rod elements for providing light path between target light at drill head and camera at drilling drive end enclosed by fluid channel supplying fluid jets - Google Patents

Abstract

The pressure drill rod (7) has at least one releasable hollow drill rod element (9) inserted between the drilling drive (6) and the drill head (8), for providing a light path between a target light (11) supplied by a light source (10) in the drill head and a camera (12) in the drilling drive, enclosed by a fluid channel for supplying fluid jets incorporated in the drill head.

Description

The invention relates to a press drill string for a Press drilling machine according to the features in the preamble of Claim 1.

For opening underground cavities smaller to medium diameter (holes) it is known with With the help of a press drilling system such a hole from a starting shaft to a target shaft respectively. The process used is environmentally friendly and reduces the nuisance in the Nature and traffic to a minimum compared to an open construction process by creating a trench. In particular, it turns out from a certain depth the press drilling process as particularly economical.

As a rule, such a bore is made to in these supply and / or drain lines, possibly in Connect with protective piping.  

A hole from the start shaft to the target shaft Being able to drive up axially in a straight line becomes an optical one Navigation applied. The press drill string is from Press drilling head up to the drive section of the press drilling was hollow in the starting shaft. In the press drill head there is one fed by a target light source Aiming through the press drill string with a camera communicated optically, which assigned to the drive part is. For this, z. B. a diode target in the press drill head disc installed with battery operation. A given one The diode point on the diode target shows the respective one Position of an end face associated with the press drill head tax amounts. Is the hole from the desired one axial direction, the pressing process is silent and then the press drill string into one Position that turned by subsequent finally axially pre-pressing the press drill string again leave in the desired position using the tax slope can be replaced. After that, the normal Drilling operations will continue. (Such a procedure counts for example with the brochures "house connection Machines "from Herrenknecht GmbH, Schwanau-Allmannsweier, and "Precise pipe jacking..." the civil engineer company Dr.-Ing. G. Soltau GmbH, Lüneburg, on the stand of the technique).

Although the well-known press drilling process in principle proven, it comes through in a number of uses the pending soil formations to one indicate aborting the drilling process. The reason for this can be a too solid, not displaceable floor or in the floor closed rock or another obstacle. In addition, the drilling process can be interrupted by too little pressing force or too little Torque of the press drilling machine drive caused become. In any case, it is then necessary to start drilling  approached from the starting shaft in a different position repeat or close it by an open trench construction replace. This is a higher cost linked like a significant scheduling delay.

It also belongs to the state of the art, underground bores using a flushable press drill procedure. That is how it is possible, harder or at least not displaceable floor piercing formations is the one thing set of optical navigation through the press drill string not possible.

Ultimately, it is known from DE 197 15 095 C1 a swiveling front part of a laser-guided two-part tunnel boring head with regard to its location to show. For this purpose, the corresponding device in Beam path between a focusing screen and a camera a disc movable along the ground glass surface. With the help of a lever mechanism, the disc can be removed from your Starting position according to the position of the front part with respect to the rear part of the lever mechanism along the The focusing screen surface can be deflected. The camera captured then the point of impact of the laser beam on the matt disc and the shadow point of the disc.

The invention is based on the prior art Task based on a press drill string for a Press drilling rig to create both the advantages of flushable press drilling process as well as those of the Press drilling process with optical internal navigation in itself united.

The solution to this problem is according to the invention in the Features in the characterizing part of claim 1 beholds.  

For this purpose, the invention provides that the opti connection between the aiming light and the camera within a fluid-tight encapsulated tube assembly in the press drill string via the integrated sighting device runs. Be on the circumferential side of the plug-in tube arrangement there is a fluid channel that extends from the drive part runs up to the press drill head and there in the out kick nozzle that ends in the area of the tax slope are seen. Via this fluid channel, parallel to Inner tube navigation a high-pressure flushing on the press drill head with water, bentonite suspensions or other emuls sions are carried out. For this, the respective Ar beitsfluid by means of a high pressure pump via a rotary Carrying out in the area of the drive part via the fluid channel pressed to the outlet nozzles. That with there high-pressure working fluid changes the con the soil and does not make it displaceable  displaceable floor. When drilling through rock or other obstacles are caused by the working fluid Press-cooled and cooled to the required extent its service life significantly extended. In addition, through the working fluid the frictional resistance between the Press drill string and the borehole wall reduced and thereby increasing the drilling capacity.

The plug-in tube arrangement is within the press drill string designed to be shot like the components of the Press drill strings, such as press drill head, boring bars and Drive part is assigned accordingly and consequently also assembled together with these components and de can be assembled.

A particularly advantageous embodiment of the plug tube arrangement in the press drill string is in the characteristics of the An Proverb 2 marked. This is in the with the An drive part connectable rotary sleeve fixed fluid and pressure tight. With the sleeve tube is an inner tube can be plugged together in a fluid and pressure-tight manner in the with the rotating union via a screw connection dung detachable boring bar is axially fixed. When ver bind the boring bar with the rotating union hence the fluid and pressure tight coupling at the same time of the inner tube with the sleeve tube. The other end the inner tube is fluid and pressure tight with an open take sleeve pluggable into the press drill head location-oriented.

If the length of the hole increases, to integrate further boring bars into the press drill string, so they can because of their end design one after the other with the rotating union and the inside the sleeve tube and the previously attached set boring bar to be coupled with inner tube.  

According to claim 3, the rotary union has one End of a flange over which the rotating union rotates torque releasably connected to the drive part can be. At the other end is the rotating union with provided a hollow pin into which an internal thread is inserted is brought. The external thread is then in the internal thread can be screwed into a socket of the boring bar. Besides, is at the end of the socket of the boring bar a circumference provided sealing ring, the inside of the hollow pin comes to the system and thus the fluid channel seals on the outside.

To ensure the fluid and pressure-tight plug-in Binding of inner tube and sleeve tube is according to the characteristics len of claim 4 on the sleeve tube in the region of the hollow tap fens a receiving chamber with sealing rings on the wall for a cylindrical plug of the inner tube of the drill rod provided. The two sealing rings are in the axia len distance from each other and come when plugged together Inner tube and sleeve tube on the outer circumference of the plug pin to the sealing system.

A secure connection of the sleeve tube with the rotating through leadership is achieved with the features of claim 5. For this purpose, the rotating union has min at least a fixing bolt, which in one to the Fixing bolt adapted radial recess in the sleeve tube is used. Several are preferred on the circumference distributed fixing bolts provided. An axial location is also done by one on the front of the sleeve tube coming into contact with the circlip, the is integrated into an inner groove of the rotating union. A sealing ring chambered on the circumference of the sleeve tube comes to rest on the inner wall of the rotating union and seals the gap between the sleeve tube and the rotation execution.  

In the middle length range, the sleeve tube is nu on the circumference except ten-like, so that the sleeve tube over two radial collar offset axially to each other in a cylinder the longitudinal channel of the rotating union is supported. Of these radial collars is the one of the admission Mekammer adjacent radial collar with axial breakthrough provided.

The introduction of a working fluid into the fluid channel is achieved with the features of claim 6. For this is a ring on the circumference of the rotating union Sealed housing. The housing can be between a radial collar on the rotating union and one Fixing ring can be embedded rotatably. In the case is an annular channel is provided on the inside, for its two Sides spaced from each other in corresponding grooves of the housing are used. The Sealing rings reach the outer circumference of the rotating union to the facility. There are radial holes in the rotating union gene provided which the annular channel with the fluid channel connect. The housing is then in a corresponding manner coupled with a fluid supply on the drive part. In this fluid supply can be right next to the housing a z. B. incorporated manually operable shut-off device his.

Each drill rod that can be integrated into the press drill string has a nozzle according to claim 7 at one end External thread and sealing ring at the end and on the other End a hollow pin with an internal thread. In the area the connector is then a cylindrical plug of the Inner tube and in the area of the hollow pin a receptacle Chamber with sealing rings on the wall for a plug pin the inner tube of another boring bar or to the dome with the receiving sleeve in the press drill head.  

For the simple production of an inner tube and also one Boring bar is featured according to the features of claim 8 see that the inner tube is both next to the spigot as well as the receiving chamber with axial breakthrough circumferential ring collars on the inside wall of the boring bar is supported. This measure represents not just the fluid-tight encapsulated optical through gear in the plug-in tube arrangement safely, but also leads to a sufficiently large fluid channel in cross section starting side of the inner tube.

For axial orientation of the inner tube in the drill rod is provided according to claim 9 that the inside pipe through from the outer circumference of the boring bar into radial Recesses of the ring chamber adjacent to the receiving chamber gens inserted in the boring bar sets is. These fixing bolts each have a thread section and a cylindrical length section. The Threaded sections are in radial threaded holes Boring bar retractable while the cylindrical lengths sections centering and fixing in the radial out take the ring collar. This definition ent speaks to that of the sleeve tube in the rotating union.

The features of claim 10 allow the inner tube in the simplest way. To do this form the up Take chamber and the adjacent ring collar components one overlapping the inner tube at the end and around sleeve welded on the exit side of the inner tube. One after ring collar protruding from the inside of the sleeve determines here in the axial relative position of the sleeve and inner tube and facilitates the welding process.

With regard to the fact that every new start setting boring bar the drilling process and thus the Feed the working fluid to the press drill head  Chen must be, the invention provides for the amount of the working fluid in the press drill string to chamber there as completely as possible. According to An Say 11 in the axial openings of the plug tenon the inner tube adjacent ring collar flexible Non-return valves incorporated. These are arranged that the working fluid is unhindered from the drive part can get to the press drill head. When coupling one In principle, a new boring bar is therefore only possible small amount of working fluid lost through the Length of the fluid channel in the rotating union and around on the catch side of the plug of the one previously attached there Boring bar is determined. The rest of the work fluid remains in the press drill string. It is coming not to the usual Ver with other flush drilling methods dirt in the area of the drive part with the result increased accident risk. It must also be disposed of amount of working fluid is significantly lower. After this Each additional boring bar only needs to be connected Amount of working fluid to be replenished by the length and cross section of the fluid channel in one Boring bar is determined. This means an essential one Reduction of working fluid requirements and a big one Time saving resulting from the shorter pump running time results for the working fluid.

Another advantage of the non-return valve, for example can be formed from rubber tongues, is that they coincide with the entry of the working fluid into the Prevent the inside of the tube assembly. The optical na vigation in the longitudinal direction of the tube assembly not affected.

The features of claim 12 also contribute at that the inner tube of a boring bar is consistently smooth can be cylindrical. The sleeve with the  axial openings and the non-return valves in the axial breakthroughs can be made and applied on their own closing after sliding onto the inner tube welded on the outer circumference of the inner tube.

According to claim 13 is the assembly reasons for integrating light assembly, two-part mounting sleeve in a receiving tube of the pressing and drilling tool fixed that working fluid over the section of the Fluid channel on the circumference of the receiving sleeve unhindered can reach the outlet nozzles. The receiving sleeve has projections on the drill rod end, over which it is supported on the inner wall of the sleeve chamber. No ben the projections are sufficiently large axial diameters Refractions arranged for the passage of the working fluid. The protrusions are next to a cylindrical one Plug the receptacle, which when coupling the Press drilling head with the adjacent boring bar in one Receiving chamber of the inner tube of this boring bar fluid and engages pressure-tight. The tax rate adj beard bottom of the receiving sleeve is with a star-shaped Insert releasably connected, which fixes in position in the receiving tube is.

According to claim 14 insert and receiving sleeve screwed together. For this purpose, the Receiving sleeve a stepped bore with a cylindrical Longitudinal section and a threaded section. The stake has an axial spigot that fits into the cylinder length section. Through an effort axially penetrating and rotatable in the threaded section Ren screw bolts are then receptacle and insert connected with each other.

The axial position of the receiving sleeve in the receiving tube is determined according to claim 15 that the use between  an inner ring collar of the receiving tube and one into a groove in the inner wall of the receiving tube settable circlip is set.

An anti-rotation device for the receiving sleeve is in the features of claim 16.

The proper coupling of the receiving tube with the be neighboring boring bar on the one hand and the receiving sleeve with the inner tube on the other hand is thereby secure represents that according to claim 17 of the plug of the receptacle sleeve in the area of one provided on the receiving tube Nozzle with external thread and circumferential end Sealing ring lies. This design corresponds to that at one end of each boring bar.

The press drill head is according to the features of the claim 18 divided into two. For this purpose, the receiving tube overlaps one cylindrical centering pin of a press and boring machine stuff on which also the front-side tax slope forms is. In the area of the centering pin, the opening is take the pipe with the pressing and drilling tool through a Cross bolt coupled. Another clutch is over from the receiving tube to the pressing and drilling tool in Form of claw teeth provided. In this way are receiving tube as well as pressing and drilling tools can be freely coupled axially with each other torque to be transmitted is safely controlled.

For orientation of the position tangent to the centering pin Cross bolt this has two end according to claim 19 term circumferential grooves in the resilient on the centering pin grab the supported fixing balls. The fixing balls are appropriately supported in sleeves on compression springs, which in Longitudinal channels of the centering pin are used.  

According to the features of claim 20 that is Pressing and drilling tool longitudinally channeled and the longitudinal ca nal stands across cross channels with the circumference of the Press and drilling tool distributed outlet arranged nozzles in connection. The number and location as well as off the direction of the outlet nozzles can correspond to the respective requirements can be chosen freely. This can the pressing and drilling tools are replaced. The receiving tube remains unchanged.

To drill through even harder layers of earth or rock to be able, it is provided according to claim 21 that forehead an axial drill bit is arranged on the control bevel side is not.

The invention is based on in the drawings gene illustrated embodiments explained in more detail. Show it:

FIG. 1 is a schematic vertical longitudinal section through a thrust boring machine in the manufacture of a bore below a road surface;

FIG. 2 in a vertical longitudinal section, on an enlarged scale, a rotary feedthrough for a press drill string of the press drilling system of FIG. 1;

Fig. 3 in vertical enlarged longitudinal section a boring bar of the press drill string;

Fig. 4 is a vertical cross section through the Dar position of Figure 3 along the line IV-IV.

Fig. 5 is a vertical cross section through the Dar position of Figure 3 along the line VV.

FIG. 6 is two fluid- and pressure-tight assembled drill rods in vertical longitudinal section;

Fig. 7 in vertical longitudinal section a press drilling head of the press drill string of Fig. 1;

Fig. 8 is a vertical cross section through the Dar position of Figure 7 along the line VIII-VIII.

Fig. 9 is a vertical cross section through the Dar position of FIG. 7 along the line IX-IX and

Fig. 10 is a vertical cross section through the Dar position of FIG. 7 along the line XX.

In Fig. 1, 1 denotes a road surface. A hole 2 is to be drilled at a distance below the road surface 1 , into which a piping (not shown in more detail) is then introduced.

To produce the bore 2 , a starting shaft 3 and a target shaft 4 are excavated in addition to the road surface 1 . In the starting shaft 3 , a Pressbohran location 5 is installed in a fixed position, which, as can be seen schematically from FIG. 1, consists essentially of a drive part 6 , a press drill string 7 and a press drill head 8 .

The press drill string 7 has at least one detachably integrated hollow drill rod 9 (see also FIGS. 3 to 6) between the drive part 6 (see also FIG. 2) and the press drill head 8 (see also FIGS . 7 to 10). A light assembly with a target light source 10 , a target light 11 fed by it and a special scattering lens is provided in the press boring head 8 in a manner not shown in detail. The target light 11 communicates optically through the press drill string 7 with a camera 12 which is assigned to the drive part 6 . For this purpose, 6 Visierein devices 13 are also provided in the form of crosshairs in the press drill head 8 and on the drive part 6 .

In order on the one hand to ensure a precise opening of the bore 2 and on the other hand to provide a pressurized working fluid on the press drill head 8 , the transfer of which from the drive part 6 to the press drill head 8 does not impair the optical connection between the target light 11 and the camera 12 , the optical connection runs between the aiming light 11 and the camera 12 according to FIG. 1 within a fluid-tight encapsulated plug-in tube arrangement 14 . A fluid channel 15 is formed on the circumferential side of the plug-in tube arrangement 14 . This stretches from a coupling 16 that can be coupled to the drive part 6 (see also FIG. 2) to the press drilling head 8 .

As can be seen in FIG. 2, the essentially cylindrical rotary feedthrough 16 has at one end a flange 17 , via which and screws 18 the rotary feedthrough 16 can be connected to the drive part 6 of the press drilling system 5 in a torque-transmitting manner.

At an axial distance from the flange 17 , the rotary bushing 16 has a radial collar 19 which serves for the axial fixing of an annular housing 20 . A circlip 21, which can be fixed on the circumference of the rotary leadthrough 16, and a sliding disk 22 also serve to axially fix the housing 20, which can be installed in a stationary manner. To the housing 20 is provided with a hand lever 23 shut-off device 24 which is connected to a feed 25 for the working fluid. Inside, the housing 20 has an annular channel 26 which is connected to the shut-off element 24 via a transverse bore 27 in the housing 20 . In the transverse plane of the ring channel 26 , a plurality of radial bores 28 are provided in the rotary leadthrough 16 , which connect the ring channel 26 to the section 29 of the fluid channel 15 in the interior of the rotary leadthrough 16 in a fluid-conducting manner. In addition to the ring channel 26 , sealing rings 30 are embedded in grooves 20 in the housing, which sealingly come to rest on the outer circumference of the rotating union 16 .

At the end opposite the flange 17 , the rotating union 16 is provided with a hollow pin 31 . The hollow pin 31 has an internal thread 32 .

The rotating union 16 has an inner channel 33 for the radial orientation of a sleeve tube 34 . The sleeve tube 34 is with an end face 35 on a hedging ring 36 which is inserted into an inner groove of the rotary union 16 . In addition to the locking ring 36 , the sleeve tube 34 lies on the entire surface of the wall of the channel 33 . In this area there is also a sealing ring 37 which is fixed on the circumferential side of the sleeve tube 34 and which also comes to bear against the wall of the channel 33 in a pressure-sealing manner.

For further position fixation of the sleeve tube 34 in the rotary feedthrough 16 is used at least one radial Fixierbol zen 38 , the tion with a threaded head 39 in a threaded hole 40 of the rotary feedthrough 16 and screwed with a cylindrical pin 41 into a corresponding radi al bore 42 of the sleeve tube 34 .

A wide circumferential groove 43 gives the sleeve tube 34 two ring collars 44 and 45 , of which the ring collar 45 is provided with axial openings 46 .

The sleeve tube 34 has at the end 35 facing end an inner receiving chamber 47 with wandseiti gene sealing rings 48th The sealing rings 48 are embedded in two axially spaced grooves 49 of the receiving chamber 47 .

Consisting of Figs. 3 to 6 in more detail recognizable drill rod 9 for the Pressbohrstrang 7 of the pressing drilling rig 5, which is required depending on the length of the bore 2 in a loading arbitrary number, having at one end a nozzle 50 with an eye screw 51 and a Sealing ring 52 , which is embedded at the end of the socket 50 in a groove 53 on the start side . The nozzle 50 is adapted to the hollow pin 31 of the rotating union 16 .

At the other end, each boring bar 9 has a hollow pin 54 with an internal thread 55 , which corresponds to the hollow pin 31 of the rotating union 16 .

Each drill rod 9 is axially traversed by an inner tube 56 as part of the Be tube assembly 14 . The inner tube 56 is essentially cylindrical. It has a cylindrical plug-in pin 57 in the area of the socket 50 of the boring bar 9 and a receiving chamber 58 with sealing rings 59 on the wall in the area of the hollow pin 54 . The receiving chamber 58 is accordingly the receiving chamber 47 in the sleeve tube 34 of the rotary guide 16 is formed.

Such as 3 can Figs. Further appreciate to 6, the inner tube is supported 56 adjacent to both the receiving chamber 58 and off the spigot 57 by having axial openings 60, 61 provided circumferential annular collar 62 63 on the inner wall of the drill rod. 9 In this way, a continuous portion 64 is formed of the fluid channel 15 in the drill rod 9 that is fluidly connected to the portion 29 of the fluid channel 15 in the rotary lead-through sixteenth

The receiving chamber 58 and this adjacent Ringkra gene 62 form part of a sleeve 65 which is pushed up to an inner collar 66 over the inner tube 56 and welded to the outer circumference of the inner tube 56 at 67 ver. The other ring collar 63 forms part of a sleeve 68 which is pushed over the inner tube 56 to a predetermined point next to the plug-in pin 57 and is then concealed at 69 on both end faces on the outer circumference of the inner tube 56 .

As with joint consideration of FIGS. 3 and 4 it, the inner tube is recognizable set 56 through the eyes periphery of the drill rod 9 forth in radial recesses 70 of the on receiving chamber 58 adjacent the annular collar 62 inserted fixing bolt 71 in the boring bar 9. For this purpose, the fixing bolts 71 each have a threaded section 72 which is screwed into a radial threaded bore 73 of the boring bar 9 . Furthermore, they have a cylindri's length 74 , which fits into the radial recess 70 of the ring collar 62 .

In the axial openings 61 of the plug 57 adjacent ring collar 63 best existing oblique check valves 75 are arranged from rubber lips. These non-return valves 75 allow unhindered passage of the working fluid from the rotating union 16 to the press drill head 8 , but prevent the working fluid from flowing back in the direction of the rotating union 16 .

The exact design of the press drill head 8 of the press drill string 7 of the press drilling system 5 of FIG. 1 can be seen in FIGS . 7 to 10.

The compression drilling head 8 consists of a receiving tube 76 with an inner sleeve chamber 77 as a section of the fluid channel 15, and a pressing and drilling tool 78 , which has a cylindrical centering pin 79 , a cross bolt 80 and claw teeth 81 at the transition from the receiving tube 76 to the pressing and drilling tool 78 is connected to the receiving tube 76 . The cross pin 80 passes through an eccentric bore 82 in the receiving tube 76 and affects the centering pin 79 ( FIGS. 7 and 8). Its position is secured by fixing balls 83 which engage in circumferential grooves 84 provided on the cross bolt 80 . The fixing balls 83 are supported in bushings 85 by compression springs, not shown. The centering pin 79 has a circumferential sealing ring 86 and surrounds in a receiving bore 87 in the receiving tube 76 in a sealing manner.

The receiving tube 76 receives in the sleeve chamber 77, a receiving sleeve 88 , which is supported via three circumferentially arranged ver projections 89 at the end facing away from the pressing and drilling tool 78 on the inner wall 90 of the receiving tube 76 .

Axial openings 91 are formed by the projections 89 . The receiving sleeve 88 has in addition to the jumps 89 before a cylindrical plug 92 in the region of a socket 93 of the receiving tube 76 , which is used via an external thread 94 to connect the hollow pin 54 to a drill rod 9 . At the free end of the socket 93 , a sealing ring 95 is provided on the circumference. This education corresponds to the training at one end of the drill rod 9th The sealing ring 95 comes into sealing contact when the receiving tube 76 is joined to a boring bar 9 on an inner cylindrical longitudinal section 96 of the hollow pin 54 (see also FIG. 3).

The receiving sleeve 88 is divided for the installation of the light assembly in the area 97 and is provided here with a screw connection.

At the other end, the receiving sleeve 88 is provided with a closed bottom 98 ge. This is frustoconical at the front at 99. A threaded section 100 and a cylindrical longitudinal section 101 with a larger diameter are provided in the bottom 98 .

In the cylindrical length section 101 , a plug pin 102 is part of a star-shaped insert 103 recognizable from FIGS. 7 and 9. The insert 103 is connected to the receiving sleeve 88 by means of a screw bolt 104 which penetrates the insert 103 axially and which is screwed into the threaded section 100 .

To secure the position of the receiving sleeve 88 in the Hülsenkam mer 77 is a radial pin 105 , which passes through the wall 106 of the receiving tube 76 and fits into a peripheral axial groove 107 of the receiving sleeve 88 in the region of the bottom 98 .

The axial installation position of the insert 103 is ensured on the one hand by an inner ring collar 108 at the transition from the sleeve chamber 77 to the receiving bore 87 and on the other hand by a locking ring 109 which can be fixed in position in a groove 110 of the receiving bore 87 .

As shown in FIGS. 7 and 8 reveal more detail, in the pressing and drilling tool 78 is a longitudinal channel 111 is provided to which the spool chamber 77 as a longitudinal section of the Fluidka Nals 15 via the recesses 112 between the ridges 113 of the insert 103 with a plurality of outlet nozzles 114 Pressing and drilling tool 78 connects as components of bushings 115 , which are used in channels 116 of the pressing and drilling tool 78 .

A control bevel 117 is located on the front side of the pressing and drilling tool 78 . An end-face drill bit 118 is fixed axially on the control bevel 117 .

List of reference symbols

1

Road surface

2nd

Drilling under

1

3rd

Starting shaft

4

Target shaft

5

Press drilling machine

6

Drive part v.

5

7

Press drill string v.

5

8th

Press drilling head v.

7

9

Boring bars

10th

Target light source

11

Target light

12th

camera

13

Sighting devices

14

Plug-in tube arrangement

15

Fluid channel

16

Rotary union

17th

Flange on

16

18th

Screws

19th

Radial collar

16

20th

Housing

16

21

Snap ring

22

Sliding washer

23

Hand lever

24th

Shut-off device

25th

Feed

26

Ring channel

27

Cross hole in

20th

28

Radial bores in

16

29

Section v.

15

in

16

30th

Sealing rings

31

Hollow pin v.

16

32

Internal thread v.

31

33

Channel in

16

34

Sleeve tube in

33

35

Front of v.

34

36

Circlip

37

Sealing ring

38

Fixing bolt

39

Threaded head v.

38

40

Tapped hole in

16

41

Cones

38

42

Radial bore in

34

43

Circumferential groove

34

44

Ring collar

34

45

Ring collar

34

46

axial openings in

45

47

Admission chamber in

34

48

Sealing rings in

47

49

Grooves f.

48

50

Neck

9

51

External thread

50

52

Sealing ring

50

53

Groove f.

52

54

Hollow spigot

9

55

Internal thread in

54

56

Inner tube in

9

57

Plug on

56

58

Admission chamber in

56

59

Sealing rings in

58

60

axial openings in

62

61

axial openings in

63

62

Ring collar

63

Ring collar

64

Section v.

15

65

Sleeve with

58

u.

62

66

inner collar v.

65

67

Weld

68

Sleeve with

63

69

Welds

70

Recesses in

62

71

Fixing bolt

72

Thread section v.

71

73

Tapped hole in

9

74

cylindrical length section v.

71

75

Non-return valves in

61

76

Receiving tube v.

8th

77

Sleeve chamber in

76

78

Press u. Drilling tool v.

8th

79

Centering pin

78

80

Cross bolt

81

Claw teeth

82

Drilling in

76

83

Fixing balls

84

Circumferential grooves

80

85

Jack f.

83

86

Sealing ring

79

87

Location hole in

76

88

Receptacle

89

Ledges

88

90

Inner wall v.

76

91

axial openings

88

92

Plug on

88

93

Neck

76

94

External thread v.

93

95

Sealing ring

93

96

Length section in

54

97

Screw range v.

88

98

Floor v.

88

99

frustoconical end face v.

98

100

Thread section in

98

101

cylindrical length in

98

102

Plug on

103

103

commitment

104

Bolts

105

Radial pin

106

Wall v.

76

107

Axial groove

88

108

Ring collar

109

Circlip

110

Groove in

87

111

Longitudinal channel in

78

112

Recesses between

113

113

Stege v.

103

114

Outlet nozzles

115

Sockets with

114

116

channels

117

Tax amounts

78

118

Drill bit on

117

Claims (21)

1. Press drill string for a press drilling system ( 5 ), which has at least one releasably integrated hollow boring bar ( 9 ) between the drive part ( 6 ) of the press drilling system ( 5 ) and a press drilling head ( 8 ) with end control ( 117 ) and in which in the press drilling head ( 8 ) is provided by a target light source ( 10 ), with a camera ( 12 ) on the drive part ( 6 ) through the boring bar ( 9 ) optically communicating target light ( 11 ), characterized in that the optical connection between the target light ( 11 ) and the camera ( 12 ) runs within a fluid-tight encapsulated plug-in tube arrangement ( 14 ) and on the circumferential side of the plug-in tube arrangement ( 14 ) a fluid channel ( 15 ) is formed, via which a rotary joint ( 16 ) with the drive part ( 6 ) can be coupled Outlet nozzles ( 114 ) in the area of the control slope ( 117 ) is connected in a fluid-conducting manner. 2. Press drill string according to claim 1, characterized in that the Steckrohranord voltage ( 14 ) through a in the cylindrical rotary feedthrough ( 16 ) fluid and pressure-tight sleeve tube ( 34 ), by an axially fixed in the drill rod ( 9 ) with which a socket tube (34) fluid and pressure-tight zusammensteckbares inner tube (56) and positionally oriented by a press in the drill head (8) and fluid to the inner tube (56) and pressure-tight fitted together receiving sleeve (88) is formed. 3. Press drill string according to claim 1 or 2, characterized in that the rotary bushing ( 16 ) at one end via a flange ( 17 ) with the drive part ( 6 ) and at the other end via an internal thread ( 32 ) having a hollow pin ( 31 ) It can be screwed to a connecting piece ( 50 ) of the boring bar ( 9 ) which has an external thread ( 51 ) and a sealing ring ( 52 ) on the end side. 4. Press drill string according to claim 3, characterized in that the sleeve tube ( 34 ) in the region of the hollow pin ( 31 ) has a receiving chamber ( 47 ) with wall-side sealing rings ( 48 ) for a cylindrical plug pin ( 57 ) of the inner tube ( 56 ) in the boring bar ( 9 ). 5. Press drill string according to claim 3 or 4, characterized in that the sleeve tube ( 34 ) in the region of the flange ( 17 ) with the rotary bushing ( 16 ) is tightly but releasably connected. 6. Press drill string according to one of claims 2 to 5, characterized in that a ring-shaped housing ( 20 ) is mounted sealed around the start of the rotary feedthrough ( 16 ), via which the section ( 29 ) of the fluid channel ( 15 ) between the rotary feedthrough ( 16 ) and the sleeve tube ( 34 ) can be acted upon with a working fluid. 7. Press drill string according to one of claims 2 to 6, characterized in that the inner tube ( 56 ) at one end has a socket ( 50 ) with an external thread ( 51 ) and sealing ring ( 52 ) and at the end thereof a hollow pin ( 54 ) Internal thread ( 55 ) having boring bar ( 9 ) in the area of the socket ( 50 ) with a cylindrical plug pin ( 57 ) and in the area of the hollow pin ( 54 ) with a receiving chamber ( 58 ) with wall-side sealing rings ( 59 ) is seen ver. 8. Press drill string according to claim 7, characterized in that the inner tube ( 56 ) both next to the plug-in pin ( 57 ) and next to the receiving chamber ( 58 ) via axial openings ( 61 , 60 ) provided on the peripheral annular collar ( 63 , 62 ) on the Inner wall of the boring bar ( 9 ) is supported. 9. Press drill string according to one of claims 2 to 8, characterized in that the inner tube ( 56 ) through from the outer circumference of the boring bar ( 9 ) in radial recesses ( 70 ) of the receiving chamber ( 58 ) adjacent ring collar ( 62 ) inserted fixing bolt ( 71 ) in the boring bar ( 9 ) is fixed. 10. Press drill string according to claim 8 or 9, characterized in that the receiving chamber ( 58 ) and the adjacent ring collar ( 62 ) form part of a sleeve ( 65 ) which overlaps the end of the inner tube ( 56 ) and the circumferential side of the inner tube ( 56 ). 11. Press drill string according to one of claims 8 to 10, characterized in that in the axial openings ( 61 ) of the plug pin ( 57 ) of the inner tube ( 56 ) adjacent ring collar ( 63 ) flexible non-return valves ( 75 ) are incorporated. 12. Press drill string according to one of claims 8 to 11, characterized in that the plug ( 57 ) of the inner tube ( 56 ) adjacent ring collar ( 63 ) is part of a sleeve pushed over the inner tube ( 56 ) and circumferentially welded to the inner tube ( 56 ). 68 ) forms. 13. Press drill string according to one of claims 8 to 12, characterized in that the receiving sleeve ( 88 ) in the press drill head ( 8 ) at the control slope ( 117 ) facing the bottom end with a star-shaped insert ( 103 ) is releasably connected, which in one Part of the press drilling head ( 8 ) forming the receiving tube ( 76 ) with the sleeve chamber ( 77 ) is fixed in position, the other end of the receiving sleeve ( 88 ) being supported via radial projections ( 89 ) on the inner wall ( 90 ) of the sleeve chamber ( 77 ). 14. Press drill string according to claim 13, characterized in that in the bottom ( 98 ) of the receiving sleeve ( 88 ) a stepped bore with a cylindrical length section ( 101 ) and a threaded section ( 100 ) is provided, wherein in the cylindrical length section ( 101 ) one on the insert ( 103 ) formed axial plug-in pin ( 102 ) and the insert ( 103 ) can be fixed by a screw bolt ( 104 ) in the bottom ( 98 ). 15. Press drill string according to claim 13 or 14, characterized in that the insert ( 103 ) between an inner ring collar ( 108 ) of the receiving tube ( 76 ) and a locking ring ( 109 ) is fixed. 16. Press drill string according to one of claims 13 to 15, characterized in that the receiving sleeve ( 88 ) through a through the wall ( 106 ) of the receiving tube ( 76 ) transversely penetrating and in a circumferential longitudinal groove ( 107 ) of the receiving sleeve ( 88 ) grasping radial pin ( 105 ) is fixed in the circumferential direction. 17. Press drill string according to one of claims 13 to 16, characterized in that a plug-in pin ( 92 ) of the receiving sleeve ( 88 ) lying next to the projections ( 89 ) in the region of a socket ( 93 ) provided on the receiving tube ( 76 ) with an external thread ( 94 ) and the end circumferential sealing ring ( 95 ). 18. Press drill string according to one of claims 13 to 17, characterized in that the receiving tube ( 76 ) forms a cylindrical centering pin ( 79 ) of a component of the press drill head ( 8 ) overlaps the pressing and drilling tool ( 78 ) and with the pressing and drilling tool ( 78 ) by a transverse bolt ( 80 ) in the area of the centering pin ( 79 ) and by claw teeth ( 81 ) at the transition from the receiving tube ( 76 ) to the pressing and drilling tool ( 78 ). 19. Press drill string according to claim 18, characterized in that the cross pin ( 80 ) tangent to the centering pin ( 79 ) has end circumferential grooves ( 84 ) into which spring-supported fixing balls ( 83 ) engage in the centering pin ( 79 ). 20. Press drill string according to claim 18 or 19, characterized in that the pressing and drilling tool ( 78 ) is longitudinally channeled and the longitudinal channel ( 111 ) via transverse channels ( 116 ) with the circumferential side of the pressing and drilling tool ( 78 ) distributes arranged outlet nozzles ( 114 ) is connected. 21. Press drill string according to one of claims 1 to 20, characterized in that an axial drill bit ( 118 ) is provided on the end face of the control bevel ( 117 ).