DE212010000211U1 - Control system and interface for a tunnel device - Google Patents

Abstract

A tunnel apparatus comprising: a drill string formed by a plurality of drill string members and having a proximal end and a distal end; a drill head attached to the distal end of the drill string and having a cutting unit; a rotary drive that provides a torque for rotating the cutting unit; a thrust drive for applying thrust to the drill string; a vacuum system for withdrawing sludge generated by the cutting unit during operation of the tunnel apparatus; a drilling fluid system for providing drilling fluid adjacent the cutting unit during operation of the tunnel facility; and a control system for controlling the operation of the tunnel apparatus having an operator interface including a thrust control element for controlling the thrust drive, a rotation control element for controlling the rotary drive and a drilling fluid control element for controlling a drilling fluid flow rate provided by the drilling fluid system, the operator interface further comprising a Has a display showing an indication of the vacuum pressure level corresponding to the vacuum system, where ...

Description

This application was filed on March 26, 2010 as an International PCT Patent Application on behalf of the Vermeer Manufacturing Company, a US national company, applicant for naming all countries except the US, and Melvin Nguyen, US citizen, John Wesley Philbrook, citizen of USA, Andis Salins, Australian Citizen, Stuart Harrison, Australian Citizen, Louis C. Hartke, US Citizen, Matthew Stephen Vos, US Citizen, Robert Hoch Shuman V., US Citizen, Hans Kelpe, US Citizen, Douglas Eugene See Jr., US citizen, and Jeffrey Scieszinski, US citizen, just filing for US designation.

Technical area

The present disclosure generally relates to trenchless boring equipment. More particularly, the present disclosure relates to tunnels (eg, drills, backfills, etc.) that are capable of maintaining accurate pitch and line.

background

Modern installation techniques provide underground installations of services required for the municipal infrastructure. Sewage, water, electricity, gas and telecommunications services are increasingly being placed underground to improve safety and create more visually pleasing environments that are not cluttered with visible services.

One method of installing underground services involves excavating an open trench. However, this process is time consuming and impractical in areas that support an existing design. Other methods of installing underground services include drilling a horizontal underground hole. However, most subsurface boring operations are relatively inaccurate and unusable for pitch and line applications.

The international PCT publication number WO 2007/143773 discloses a micro-tunneling system and a micro-tunneling device capable of drilling and expanding a subterranean micro-tunnel at accurate pitch and line. While this system represents a significant advantage over most prior art systems, further improvements can be used to achieve even better performance.

Presentation of the invention

One aspect of the present disclosure relates to a tunnel (eg, boring, back-widening, etc.) device having a drill head with a main body and a steering member that is movable relative to the main body. The tunneling apparatus further includes a vacuum system for removing deposits from the bore being drilled and a drilling fluid system for providing drilling fluid along the bore which is drilled. The tunneling apparatus further includes a control system that allows an operator to control the rotation of a cutter of the drill bit, wherein the thrust is applied to the drill bit and the amount of drilling fluid is provided along the bore while simultaneously directing the drill bit and the drill head Vacuum pressure of the vacuum system is monitored. By monitoring the vacuum pressure, the operator can identify foreboding conditions and take corrective action immediately, such as: Increasing the flow rate of the drilling fluid, increasing the rotational speed of the cutting unit, and / or reducing or eliminating the thrust applied to the drill head. Steering can be accomplished through the use of a steering element (eg, a joystick) of the control system and a screen that indicates the position of a guide laser on the target provided on the drill bit. In certain embodiments, the various control components may be provided as part of a compact, portable control unit that can communicate with various other components of the control system through a wired or wireless technology.

Another aspect of the present invention relates to a control system for a tunneling device. The control system includes a first operation mode for drilling or retracting and a second mode of operation for changing pipe parts (eg, adding or removing pipe parts from a string of pipe parts).

A variety of additional aspects are set forth in the following description. The aspects concern individual features and combinations of features. It should be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not limiting of the broad inventive concepts on which the embodiments disclosed herein are limiting.

Brief description of the drawings

1 is a schematic representation of a tunneling device with features in Accordance with the principles of the present disclosure;

2 FIG. 14 is a perspective view showing a plug end of a pipe part suitable for use with the tunneling apparatus shown schematically in FIG 1 is shown;

3 FIG. 15 is a perspective view illustrating a bushing end of the pipe part of FIG 2 shows;

4 is a perspective view of the pipe part of 2 with an outer jacket removed to show the internal components of the tubular member;

5 is a perspective cross-sectional view of the pipe part of 2 wherein the tube part is cut along a horizontal cross-sectional plane bisecting the tube part;

6 is a perspective cross-sectional view of the pipe part of 2 wherein the tubular member is cut along a vertical cross-sectional plane bisecting the tubular member;

6A is a longitudinal cross-sectional view of an interface between two drive shafts of the pipe parts;

7 is an end view showing the bushing end of the pipe part of 2 shows;

8th is an end view showing the plug end of the pipe part of 2 shows;

9 FIG. 12 is a cross-sectional view showing locks made at the female end of the pipe part of FIG 2 are attached, wherein the locks are shown in a non-barrier orientation;

10 is a cross-sectional view showing the barriers of 9 in a blocking orientation;

11 is a cross-sectional view through a reinforcing plate of the pipe part of 2 runs;

12 FIG. 12 shows an exemplary drive unit suitable for use with the tunneling apparatus shown schematically in FIG 1 is shown;

13 is another schematic representation of the tunneling device of 1 ;

14 FIG. 14 is a perspective view of an exemplary control interface unit suitable for use with the tunneling apparatus of FIG 1 to 13 suitable is;

15 FIG. 11 is a plan view of a control panel arrangement of the control interface unit of FIG 14 ;

16 is a perspective view of the control panel assembly of 15 ;

17 is an indication of the control panel arrangement of 15 and 16 ; and

18 shows a screen displayed by a screen display device displayed in the display of 17 is included.

Detailed description

A. Overview of an exemplary boring device

1 shows a tunneling device 20 with features in accordance with the principles of the present disclosure. In general, the device has 20 several pipe parts 22 which are coupled together in an end-to-end relationship, such as a drill string 24 train. Each of the drilling parts 22 has a drive shaft 26 rotatable in an outer housing construction 28 is appropriate. A drill head 30 is at a distal end of the drill string 24 attached while a drive unit 32 at a proximal end of the drill string 24 is positioned. The drive unit 32 has a torque drive 32a which is capable of torque on the drill string 24 exercise, and an axial drive 32b for applying a pushing or pulling force to the drill string 24 on. The torque drive 32a and the axial drive 32b can be powered by a hydraulic system (eg a system of pumps and hydrostatic drives) powered by a main system motor 33 is energized.

The pushing or pulling force of the drive unit 32 is between the proximal end and the distal end of the drill string 24 through the outer housing structures 28 the pipe parts 22 transfer. The torque is from the proximal end of the drill string 24 to the distal end of the drill string 24 through the drive shafts 26 the pipe parts 22 transferred, relative to the housing structures 28 rotate. The torque from the drive unit 32 is through the device 20 through the drive shafts 26 transferred and is ultimately used to a cutting unit 34 of the drill head 30 to rotate.

The pipe parts 22 can also be referred to as drill rods, wells or drilling elements. The pipe parts are typically used to form a subterranean well and are then removed from the underground well, when the product (eg piping) is installed in the hole.

The drill head 30 the drilling device 20 can drive a shaft 46 which is rotatable within a main body 38 of the drill head 30 is appropriate. The main body 38 may comprise a one-piece body or may comprise a plurality of pieces or modules coupled together. A distal end of the drive shaft 46 is designed so that there is a torque to the cutting unit 34 transfers. A proximal end of the drive shaft 46 is with the drive shaft 26 of the most distal end part 22 coupled, so that torque from the drive shafts 26 to the drive shaft 46 is transmitted. In this way, the drive shaft acts 46 as the last leg for transmitting torque from the drive unit 32 to the cutting unit 34 , The outer housing structures 28 transmit a pushing and / or retracting force to the main body 38 of the drill head. The drill head 30 preferably has bearings (eg, axial / abutment and radial bearings) that allow the drive shaft 46 relative to the main body 38 rotates, and also allow the pushing or pulling force of the main body 38 through the drive shaft 46 on the cutting unit 34 is transmitted.

In certain embodiments, the tunneling device becomes 20 used to form underground holes with accurate pitch. For example, the tunneling device 20 to install a subterranean pipe installed at a precise pitch. In some embodiments, the tunneling device may 20 used to install a subterranean pipe or other product having an outer diameter of less than 600 mm or less than 300 mm.

It is preferable that the tunneling device 20 a steering assembly adapted to pass the bore being drilled through the tunneling device 20 to get at a precise slope and line. Also with respect to 1 points the drill head 30 z. B. a steering mantle 36 up, over the main body 38 of the drill head 30 is appropriate. Steering the tunnel device 20 is achieved by generating a radial movement between the steering mantle 36 and the main body 38 reached (eg with radially oriented piston, one or more bubbles, mechanical linkages, worm drives, etc.). Radial steering forces for steering the drill head 30 be between the coat 36 and the main body 38 transfer. From the main body 38 be radial steering forces through the drive shaft 46 to the cutting unit 34 transfer. Steering the tunnel device 20 is preferably performed in combination with a guide system used to ensure that the drill string 24 along a precise slope and line progresses. For example, the guidance system, as in 1 shown a laser 40 on, a laser beam 42 by a continuously axially extending air passage (eg passage 43 , as in 13 shown) passing through the outer housing assemblies 28 the pipe parts 22 is defined to a goal 44 which adjoins the drill head 30 is arranged. The air passage extends from the proximal end to the distal end of the drill string 24 and allows the cutting unit 34 is provided with air.

The tunnel device 20 also has an electrical control 50 (for example, a computer or other data processing device) connected to a user interface 52 connected, and a monitor 54 on. The user interface 52 may include a keyboard, joystick, mouse, or other interface device. The control 50 can also use a camera 60 such as B. a video camera, which is used as part of the steering system. For example, the camera can 60 Create images of the point where the laser hits the target 44 meets. It will be recognized that the camera 60 within the drill head 30 may be attached or outside the tunnel device 20 (eg, adjacent to the laser). If the camera 60 on the drill head 30 Thus, data cables from the camera may pass therethrough, from the distal end to the proximal end of the drill string 24 runs and through the outer housing structures 28 the pipe parts 22 is defined. In still other embodiments, the tunneling device 20 Have wireless technology that allows remote control with the downhole camera 60 communicated.

While steering the tunnel device 20 For example, the operator can see the images produced by the camera, which are the point of the laser beam 42 on the target 44 by means of the monitor 54 demonstrate. Starting from where the laser beam 42 to the goal 44 the operator can determine in which direction the device is steered so that a desired line and inclination through the laser beam 42 will be produced. The operator steers the drill string 24 through the user interface to a shell drive 39 to induce the relative radial position of the steering mantle 36 and the main body 38 of the drill head 30 to modify. In one embodiment, a radial steering force / load is applied to the steering mantle 36 in the radial direction opposite to the radial direction in which the drill string is to turn. If it is z. B. is desired, the drill string 24 To steer upward can be a downward force on the steering mantle 36 be exercised that the main body 38 and the cutting unit 34 forces the drillstring to turn up when the drillstring 24 axially advanced in a forward / distal direction. If it is desired to steer down, similarly, an upward force on the steering mantle may occur 36 be exercised, which is the main coat 38 and the cutting unit 34 down forces what the drill string 24 causes it to be directed down when the drill string 24 axially advanced in a forward / distal direction.

In certain embodiments, the radial steering forces on the steering mantle 36 are exerted by a plurality of radial pistons extending selectively radially and radially relative to a longitudinal center axis of the drill string by operation of a hydraulic pump and / or valve (see pump 700 in 25 to 28 ) are withdrawn. The hydraulic pump and / or valve are controlled by the controller 50 controlled, based on input from the user interface. In one embodiment, the hydraulic pump and / or valve are positioned outside of the hole being drilled and hydraulic fluid lines are conveyed from the pump / valve to the radial pistons via a passageway that extends from the distal end to the proximal end of the drill string 24 runs and within the outer housing structures 28 the pipe parts 22 is defined. In other embodiments, the hydraulic pump and / or valve may be within the drill bit 30 be arranged and control lines can from the controller 50 to the hydraulic pump and / or the valve by a passage continue, from the distal end to the proximal end of the drill string 24 runs and within the outer housing structures 28 the pipe parts 22 is defined. In still other embodiments, the tunneling device 20 have wireless technology that allows the controller to control the hydraulic pump and / or valve within the drill bit 30 remotely controls.

To aid in drilling out the tunnel device 20 also a liquid pump 63 comprising the drilling fluid from the proximal end to the distal end of the drill string 24 forces. In certain embodiments, the drilling fluid may pass through a central passageway (eg, passageway 45 , as in 13 shown) by the drive shafts 26 is defined. The central passage, through the drive shafts 26 may be in fluid communication with a plurality of liquid dispensing ports attached to the cutting unit 34 are provided that the drilling fluid readily on a cutting surface of the cutting unit 34 is provided. Liquid may be supplied to the central passageway through a liquid rotary head attached to the drive unit 32 is arranged. The liquid pump 63 can be powered by the hydraulic system that passes through the main system engine 33 is energized. A valve 400 that through the control 50 can be used to selectively control the fluid communication between the fluid pump 63 and the fluid passage (e.g., the passage 45 ) of the drill string to open and close.

The tunnel device 20 may also include a vacuum system for removing excavation and drilling fluid from the well being drilled. For example, the drill string 24 a vacuum passage (eg passage 47 , as in 13 shown) extending continuously from the proximal end to the distal end of the drill string 24 extends. The proximal end of the vacuum passage may be in fluid communication with a vacuum 65 (eg, a vacuum pump), and the distal end of the vacuum passage is typically directly behind the cutting unit 34 , adjacent to the bottom of the hole. The vacuum 65 applies a vacuum pressure (eg, a negative pressure / pressure below atmospheric pressure) to the vacuum passage to excavate and fluid (eg, drilling fluid from the fluid passage 45 ) to remove from the bore that is being drilled out. A vacuum interrupter valve 402 that through the control 50 can be used to selectively control the fluid communication between the vacuum 65 and the vacuum passage of the drill string (eg, passage 47 ) to open and close (ie to connect and disconnect). The vacuum 65 can by a vacuum motor 404 be energized. For example, the vacuum motor 404 power a hydraulic drive system that supplies the vacuum 65 drives. At least some air at the distal end of the drill string 24 through the air passage 43 is also typically drawn into the vacuum passage so as to assist in preventing clogging of the vacuum passage. In particular embodiments, the fluid and excavation removed from the bore through the vacuum passage may be transferred to a storage tank 67 be delivered.

B. Exemplary pipe part

2 to 11 show an example of one of the pipe parts 22 in accordance with the principles of the present disclosure. The pipe part 22 is along a central axis 120 stretched and has a plug end 122 (please refer 2 ), the opposite of a socket end 124 is positioned (see 3 ). If several of the pipe parts 22 lined up, are the sleeve ends 124 with the plug ends 122 adjacent pipe parts 22 coupled.

Regarding 2 and 3 has the outer housing structure 28 the illustrated pipe part 22 endplates 126 on, those at the male and female ends 123 . 124 are positioned. The outer housing construction 28 also has an outer jacket 128 on, extending from the connector end 122 to the end of the socket 124 extends. The outer coat 128 is substantially cylindrical and defines an outer diameter of the pipe part 22 , In a preferred embodiment, the outer jacket 128 designed to support a hole that is drilled out so as to prevent the hole from collapsing during the boring process.

As in 3 shown defines the outer housing structure 28 Furthermore, a laterally open passage part 130 that has a length extending from the plug end 122 to the end of the socket 124 of the pipe part 22 extends. The laterally opened passage part 130 is through a channel structure 132 (please refer 11 ) with outer sections 134 defined on the outer shell 128 fastened (eg soldered) are. The channel structure 123 defines an open page 136 attached to the outer jacket 128 is positioned. The open side 136 shows substantially radially outwardly of the outer shell 128 and extends along the entire length of the pipe part 22 , If the pipe parts 22 coupled together so as to drill the drill string 24 form, are the laterally open passage parts 130 coaxially aligned with each other and cooperate to define a continuous, laterally open external channel extending along the length of the drillstring 24 extends.

The outer housing construction 28 of the pipe part 22 also has a structure for rotatably supporting the drive shaft 26 of the pipe part 22 on. For example, the outer housing structure 28 , as in 4 to 6 shown a tubular shaft 140 on, extending along the central axis 120 from the plug end 122 to the end of the socket 124 extends. Opposite ends of the shaft mount 140 are (eg soldered) to the end plates 126 attached. The wave recording 140 has a middle section 142 and end collar 144 on. The end collar 144 are (eg soldered) at the ends of the middle section 142 attached. The end collars 144 have a larger diameter than the middle section 142 on. The end collars 144 are also (eg soldered) to the end plates 126 attached so that the collars 144 to act as the middle section 142 relative to the end plates 126 fix.

Continue with reference to 4 to 6 is the drive shaft 26 rotatable in the shaft holder 140 of the outer housing structure 28 appropriate. A warehouse 143 (Such as a bearing of the radial sleeve type, as in 6 shown) is preferably in at least one of the collars 144 provided to the drive shaft 26 within the wave recording 140 rotatable support. In certain embodiments, the bearings may be for supporting the drive shaft 26 in both collars 144 the wave recording 140 be provided.

The outer housing construction 28 also has several gusset plates 160 on that between the outer coat 128 and the middle section 142 the wave recording 140 are attached (see 4 . 5 and 11 ). The gusset plates 160 provide assistance in reinforcing the outer shell 128 to prevent the outer jacket from being crushed during handling or other use.

The pipe part 22 also has a plurality of internal passage parts extending axially through the pipe part 22 from the plug end 122 to the end of the socket 124 extend. For example, with reference to 6 defines the outer housing structure 28 a first internal passage part 170 and a separate second internal passage portion 172 , The first and second internal passage parts 170 . 172 each extend completely through the length of the pipe part 22 , The first internal passage part 170 is through a tube structure 173 defined along the length of the pipe section 22 extending and having opposite ends, which at the end plates 126 are attached. The end plates 126 define openings 175 that with the tube structure 173 are aligned. A surface seal 177 or another seal member may be attached to an outer surface on at least one of the end plates 126 be provided, which the openings 175 surrounded, so if two of the pipe parts 22 coupled together, their corresponding passage parts 170 align coaxially and at the interface between the plug end and the socket end 122 . 124 the connected pipe parts 22 are sealed. If the pipe parts 22 coupled to each other so that they drill the drill string 24 training, are the first internal passage parts 170 coaxially aligned with each other and cooperate to provide the continuous vacuum passage 47 form, extending axially through the length of the drill string 24 extends.

Continue with reference to 6 is the second internal passage part 172 through a tube structure 180 defined having opposite ends, which at the end plates 126 are attached. The end plates 126 have openings 181 on, with the tube part 180 are aligned. A surface seal 179 or another seal member may be attached to an outer surface of at least one of the end plates 126 be provided, which the openings 181 surrounded, so if two of the pipe parts 22 coupled with each other, their corresponding Through parts 172 align coaxially and at the interface between the plug end and the socket end 122 . 124 the connected pipe parts 22 are sealed. If the pipe parts 22 connected to each other, so that they the drill string 24 form, are the second internal passage parts 172 coaxially aligned with each other and cooperate to provide the continuous passage of air 43 form, extending axially through the length of the drill string 24 extends.

Continue with reference to 6 extends the drive shaft 26 through the wave recording 140 and has a plug means for torque transmission 119 at the end of the plug 122 of the pipe part 22 is provided, and a bushing means for transmitting torque 192 on, at the end of the socket 124 of the pipe part 22 is positioned. The plug means for torque transmission 190 is formed by a stub (eg, a pinion) that extends outward from the end plate 126 at the plug end 122 of the pipe part 22 protrudes. The plug means for torque transmission 190 has a plurality of flat parts (eg, a hexagonal pattern of flat parts forming a hexagonal head) for facilitating torque transmission from drive shaft to drive shaft when the tube parts 22 in the drill string 24 are coupled. The bushing means for torque transmission 192 the drive shaft 26 defines a socket (eg, a box) sized to receive the torque transfer connector means 190 the drive shaft 26 an adjacent pipe part 22 within the drill string 24 receives. The bushing means for torque transmission 192 is shown as being relative to the outer surface of the end plate 126 at the end of the socket 124 of the pipe part 22 is admitted. In one embodiment, the bushing means for torque transmission 192 a shape that is complementary to the outer shape of the connector means for transmitting torque 190 is. For example, in one embodiment, the bushing means for torque transmission 192 to accept the training of a hexagon box. The interface between the plug and socket means for torque transmission 190 . 192 allows torque from drive shaft to drive shaft within the drill string 24 transmitted through the interconnected pipe parts 22 is defined.

As in 6 Shown defines each of the drive shafts 26 a central passage part 194 that extends longitudinally through the drive shaft 26 from the plug end 122 to the end of the socket 124 extends. If the pipe parts 22 are interconnected so they drill the drill string 24 form, are the central passage parts 194 the drive shafts 26 axially aligned and in fluid communication with each other so that a continuous, interrupted center passage (eg, center passage 45 , as in 13 shown) by the drive shafts 26 of the drill string 24 from the proximal end to the distal end of the drill string 24 extends. The continuous middle passage 45 that is inside the drive shafts 26 defined, allows drilling fluid through the drill string 24 to the cutting unit 34 to pump.

6A shows an exemplary coupling between the plug and socket means for torque transmission 190 . 192 , The bushing means for torque transmission 192 is as a collar 1010 shown the first end 1012 which is opposite to a second end 1014 is positioned. A hole 1015 goes through the collar 1010 from the first end 1012 to the second end 1014 therethrough. The hole 1015 has a first area 1016 defining torque transfer means (eg, inner flat members in a pattern such as a hexagonal pattern, inner ribs, etc.) and a second portion 1018 on, which has an enlarged cross section compared to the first area 1016 having. The first area 1016 extends from the first end 1012 of the collar 1010 to a radial shoulder 1020 , The second area 1018 extends from the second end 1014 of the collar 1010 to the radial shoulder 1020 , The first end 1012 of the collar 1010 is fixed to a corresponding drive shaft 26a fastened (eg soldered), which is a shortened torque transmission part 1022 that is in the first area 1016 the bore 1015 fits. The torque transmission part 1022 has means for transmitting torque (eg, external flat parts, ribs, etc.) that are in line with the first region 1016 Engage that torque between the shaft 26a and the collar 1010 can be transferred. In one embodiment, the torque transmitting member 1022 a length less than one third of a corresponding length of the first region 1016 of the collar 1010 , The section of the first area 1016 which is not due to the shortened torque transmission part 1022 is occupied, is designed so that the connector means for torque transmission 190 an adjacent drive shaft 26b is absorbed, so that the torque between the drive shafts 26a . 26b can be transferred. The second area 1018 the bore 1015 can through an inner cylindrical surface of the collar 1010 be defined when guiding the connector means for torque transmission 190 in the first area 1016 Assistance, if the drive shafts 26a . 26b be moved axially in conjunction with each other. In addition, a sealing element 1024 (eg, a radial seal such as an O-ring seal) within the second region 1018 be attached. The sealing element 1024 may be a seal between the connector means for torque transmission 190 and the second area 1018 the bore 1015 Provide to prevent drilling fluid from the Central passage 45 at the connection between the drive shafts 26a . 26b escapes.

The plug end and the socket end 122 . 124 the pipe parts 22 are designed so that they have a rotational alignment between the tube parts 22 of the drill string 24 create. For example, the connector end 122 , as in 2 shown, two alignment tabs 196 (eg, pins) on opposite sides of the longitudinal center axis 120 are positioned. Referring to 5 points each of the alignment tabs 196 a base part 197 on, that at the end plate 126 at the plug end 122 is anchored. Each of the alignment tabs 196 also has a main body 195 on, the axially outward of the base part 197 protrudes. The main body 195 has a head section 198 with a tapered outer end and a tapered section 199 on, the axially between the head section 198 and the base part 197 is positioned. If a plug end 122 a first pipe part 22 engaged with the socket end 124 a second pipe part 22 brought, the main body fit 195 the alignment tabs 196 at the end of the plug 122 are provided, in (eg, they slide axially into) corresponding projection bushing parts 200 (as in 3 shown) at the end of the socket 124 are provided. If the main body 195 the alignment tabs 196 axially in the projection sleeve parts 200 slide, slip locks 202 at the end of the socket 124 (please refer 9 ) are held in non-locking positions in which the locks 202 not with the insertion of the projections 196 through the book parts 200 interact. The sliding blocks 202 have openings 206 on which the boss sleeve parts 200 at the end of the socket 124 correspond. The openings 206 have first areas 208 , each having a diameter D1 (see 9 ), which is larger than an outer diameter D2 (see 8th ) of the head sections 198 is, and second sections 210 on, each having a diameter D3 (see 9 ) substantially coincident with an outer diameter passing through the tapered portion 199 the alignment tabs 196 is defined. The diameter D3 is smaller than the outer diameter D2 passing through the head portion 198 is defined. The tab socket parts 200 have a diameter D4 (see 7 ), which is only slightly larger than the diameter D2. When the sliding blocks 202 in the non-blocking position, the first areas are directed 208 the openings 206 coaxial with the projection sleeve parts 200 out. After the main body of the alignment protrusions 196 completely in the tab socket parts 200 are used, a separate connection step is performed, in which the locks 202 (eg manually with a hammer) are moved to locking positions in which the alignment projections 196 in the projection sleeve parts 200 being held.

The sliding blocks 202 are along sliding axes 212 relative to the outer housing 28 of the pipe part 22 between the locking positions (see 10 ) and the non-blocking positions (see 9 ) slidable. In non-blocking positions, the first areas align themselves 208 the openings 206 the sliding blocks 202 coaxial with the projection sleeve parts 200 out. In the lock positions are the first areas 208 the openings 206 partly from the projection sleeve parts 200 offset and the second areas 210 the openings 206 at least partially overlap the projection sleeve parts 200 ,

To couple two pipe parts together, the alignment projections 196 one of the pipe parts in the projection bushing parts 200 the other tube part are used. When the sliding blocks 202 are held in the non-locking positions (eg, a protrusion clearance position), the main bodies 195 the alignment tabs 196 axially in the projection bushing parts 200 and through the first areas 208 the openings 206 without interaction with the slide locks 202 be used. After the alignment tabs 196 completely in the tab socket parts 200 are used and a relative axial movement has been stopped between the pipe parts, the slide locks 202 be moved to the locking positions, so as to connect between the pipe parts 22 manufacture. If the second areas 210 the openings 206 in the locked positions, they fit over the tapered sections 199 the alignment tabs 196 so that the sections of the slide locks 202 the head sections 198 the projections 196 overlap. This overlap / interaction between the sliding blocks 202 and the head sections 198 the alignment tabs 196 prevents the main body 195 the alignment tabs 196 axially out of the projection sleeve parts 200 be pulled out. In this way, a secure mechanical coupling between adjacent individual pipe parts 22 created. No connection will be between the pipe parts 22 made until the sliding locks 202 have been moved to the locked position. To the pipe parts 22 To decouple, the sliding locks can 202 be returned to the non-locking position, whereby the alignment projections 196 readily axially from the Vorsprungsbuchsenteilen 200 can be pulled out and the pipe parts 22 can be separated axially from each other.

The sliding axle 212 every slip lock 200 extends longitudinally through a length of its corresponding slide lock 202 , Every slip lock 202 also has a pair of elongated cuts 220 on, have the lengths extending along the sliding axis 212 extend. The outer housing construction 28 of the pipe part 22 has pins 222 up, moving through the cuts 220 the sliding blocks 202 extend. The pins 222 prevent the slips 202 disengaged from the outer housing assemblies 28 come. The cuts 220 further create a range of motion along the sliding axes 212 through which the sliding blocks 202 between the non-locking position and the locked position.

When two of the tube parts are locked, the interaction between the slide locks locks 202 and the enlarged heads / ends 198 the projections 196 the adjacent pipe parts 22 mechanically together or coupling them together so that a pull-back or other tensile loads from the pipe part 22 to the pipe part 22 in the drill string 24 can be transmitted. This allows the drill string 24 is pulled out of the drilled hole by pulling the drill string 24 back in a proximal direction. The pull-back load is by / by means of the housing assemblies 28 the pipe parts 22 worn and not by the drive shafts 26 , Before retracting the drill string 24 can the drill head 30 be replaced by a back expander which is capable of widening the drilled hole when the drill string 24 pulled back out of the drilled hole.

The alignment tabs 196 and book parts 200 also remain in coaxial alignment between the pipe parts 22 and make sure that the internal and external axial passage parts, respectively through the pipe parts 22 are aligned coaxially with each other so that continuous passageways defined by the length of the drillstring are defined 24 extend. Regarding 9 z. B. adjusts the orientation through the protrusions 196 and the book parts 200 is created, sure the first internal passage parts 170 of the pipe part 22 coaxially aligned with each other (eg, all at the 6 o'clock position relative to the central axis 120 are positioned), the second internal passages 172 coaxially aligned (eg, all substantially at the 12 o'clock position relative to the central axis 120 are positioned) and the laterally open channels 130 all are coaxially aligned (eg, all substantially at the 1 o'clock position relative to the central axis 120 are positioned).

C. Exemplary drive unit

12 shows an exemplary configuration for the drive unit 32 the tunneling / boring device 20 , Essentially, the drive unit 32 a carrier 300 Sliding on a rail structure 302 is appropriate. The rail structure 302 is through a base of the drive unit 32 supported, which is suitable in a dredged structure such. B. to be mounted a well. Extendable feet 305 can be used to anchor the rails within the wellbore, and extendable feet 306 can be used to set the base at a desired angle relative to the horizontal. The drive unit 32 has a linear actuator for moving the carrier 300 proximally and distally along an axis 303 parallel to the rail structure 302 on. The thrust drive may include a hydraulically energized gear train (eg, one or more gear drives are driven by one or more hydraulic motors) through the carrier 300 is worn with an elongated rack 307 engages, extending along the rail structure 30 extends. In other embodiments, hydraulic cylinders or other structures suitable for moving the carrier distally or proximally along the track may be used. The drive unit 32 further includes a torque drive (eg, a hydraulic drive) provided by the carrier 300 for applying a torque to the drill string 24 worn. Such as In 12 As shown, the drive unit may be a bushing rotation drive element 309 on the support 300 mounted selectively in a clockwise and counterclockwise direction about the axis 303 is driven / rotated by a drive (eg hydraulic drive motor) by the carrier 300 worn. The bushing rotation drive element 309 may be suitable, the connector means for torque transmission 190 the drive shaft 26 to accommodate the most proximal tubular portion of the drill string 24 equivalent. Lead female parts 311 are on opposite sides of the bushing drive element 309 positioned. The tab socket parts 311 are designed so that they have the projections 196 of the most proximal tubular part 22 Take care to ensure that the most proximal tube part 22 in the correct rotational / angular orientation about the central axis 303 of the drill string is oriented. The wearer also wears a vacuum hose connection 313 suitable for connection to a vacuum hose in fluid communication with the vacuum 65 the tunnel device 20 is. The vacuum hose connection 313 is also in fluid communication with a vacuum port 314 , which is directly below the bushing drive element 309 is positioned. The vacuum connection 314 Coaxially aligns with the first internal passage part 170 of the most proximal tubular part 22 off when the most proximal tube part with the drive unit 32 is coupled. In this way, the vacuum becomes 56 in fluid communication with the vacuum passage 47 of the drill string 24 placed so that vacuum on the vacuum passage 47 can be exercised so that mud through the vacuum passage 47 is pulled.

The carrier 300 further defines a laser aperture 315 through which the laser 42 from the laser 40 can be directed. The laser beam opening 315 is directed coaxially with the second internal passage part 172 of the most proximal tubular part 22 off when the most proximal tube part 22 with the drive unit 32 is coupled. In this way, the laser beam 42 through the air passage 43 of the drill string 24 sent.

The bushing rotation drive element 309 further defines a central opening that is in fluid communication with a source of drilling fluid (eg, fluid / fluid pump 63 the tunnel device 20 ). When the bushing rotation drive element 309 with the connector means for torque transmission 190 the drive shaft 26 of the most proximal tubular member, drilling fluid may be supplied from the source of drilling fluid through the torque transmitting connector means 190 to the central fluid passage (e.g., passage 45 ) introduced by the drive shafts 26 the pipe parts 22 of the drill string 24 is defined. The middle fluid passage through the drive shafts 26 is defined, carries the drilling fluid from the proximal end to the distal end of the drill string 24 so that drilling fluid at the cutting surface of the cutting unit 34 is provided.

To drill a hole, a pipe part 22 to which the drill head 30 is attached to the drive unit 32 loaded while the wearer at a most proximal position of the rail structure 302 is. The proximal end of the tube part 22 will be sent to the carrier 300 coupled. Next, the thrust drive pushes the carrier 300 in a distal direction along the axis 303 forward, while the torque at the same time on the drive shaft 26 of the pipe part 22 through the bushing rotation drive element 309 is exercised. By using the thrust drive to drive the carrier 300 in the distal direction along the axis 303 gets thrust from the wearer 300 on the outer case 28 of the pipe part 22 transferred, causing the pipe part 22 is made to be pushed distally into the ground. Once the carrier 300 the most distal position of the rail structure 302 reaches, the proximal end of the pipe part 22 from the carrier 300 decoupled and the carrier 300 brought back to the most proximal position. The next pipe part 22 is then in the drive unit 32 loaded by the distal end of the new tube part 22 with the proximal end of the tube part 22 is connected, which is already in the reason, and by the proximal end of the new pipe part 22 with the carrier 300 is connected. The carrier 300 is then driven forward again in the distal direction while torque is simultaneously applied to the drive shaft 26 of the new pipe part 22 is exercised until the carrier 300 reached the most distal position. Thereafter, the process is repeated until the desired number of tube parts 22 to the drill string 24 has been added.

The drive unit 32 Can also be used to drill the drill string 24 to pull for the reason. By locking the projections 126 of the most proximal tubular part 22 in the projection sleeve parts 311 of the drive unit carrier 300 (eg, with slide locks provided on the carrier) while the carrier is in the most distal position, and then using the thrust drive of the drive unit 32 to the wearer 300 Moving in the proximal direction from the most distal position to the most proximal position will create a pullback load on the drill string 24 exercised that causes the drill string 24 is pulled out of the drilled hole in the ground. If necessary, drill the hole while pulling out the drill string 24 rearward widening, the cutting unit 34 be replaced by a Rück-Aufweiter, by the torque drive of the drive unit 32 is rotationally driven when the drill string 24 is withdrawn. After the most proximal tube part 22 has been pulled out of the bore and from the drive unit 32 is decoupled, the carrier can 300 be moved from the most proximal position to the most distal position and connected to the most proximal tube part remaining in the bottom. Thereafter, the retrieval process can be repeated until all the pipe parts are pulled out of the ground.

D. Exemplary Vacuum Throughput Clogging Detection System

13 is another schematic view of the tunneling device 20 from 1 , Referring to 13 are the air and vacuum passages 43 . 47 shown schematically, extending axially through the drill string 24 extend. The drive shafts 26 extending axially through the drill string from the drive unit 32 to the cutting unit 34 extend are also shown schematically. The fluid / fluid pump 63 is shown, the drilling fluid through the middle fluid passage 45 passes through the drive shafts 26 is defined and extending from the proximal end to the distal end of the drill string 24 extends. In other embodiments, the fluid / fluid pump 63 convey the drilling fluid along a fluid conduit positioned within the conduit, through the laterally opened passageway parts 130 the pipe parts 22 is defined. The air passage 43 is in fluid communication with an air pressure source 360 shown that compressed air into the proximal end of the air passage 43 leads. The source of air pressure 360 It may include a fan, blower, air compressor, air pressure accumulator or other sources of compressed air. The vacuum passage 47 is in fluid communication with the vacuum 65 shown for removing mud from the hole. The vacuum 65 applies a vacuum to the proximal end of the vacuum passage 47 out.

Because a hole through the tunneling device 20 is formed, it is possible that the vacuum passage 47 adjacent to the distal end of the drill string 24 is clogged. Once the vacuum passage 47 clogged, it can be difficult to the vacuum passage 40 to vacate. For example, it may be necessary to drill the drill string 24 pull out of the hole and clear the obstacle manually. That's why the tunneling device 20 equipped with means that reduce the likelihood that the vacuum passage 47 is clogged. For example, by applying positive air pressure to the proximal end of the air passageway 43 by means of the source of air pressure 360 more air for the distal end of the drill string 24 provided, whereby the probability of clogging is reduced. The air is forced (ie by the source of air pressure 360 blown), along the air passage 43 to the adjacent cutting unit 34 to flow, and then flows into the vacuum passage 47 , In this way, the positive pressure from the source of air pressure carries 360 in addition, cuttings / sludge proximal into and through the vacuum passage 47 to press and the source of the vacuum 65 drags cuttings / sludge proximally into and through the vacuum passage 47 , In certain embodiments, the flow rate and pressure of the air are along the air passage 43 is blown, coordinated and balanced with the evacuation rate passing through the source of the vacuum 65 is provided.

One or more pressure measurement points 370a . 370b may be at points along the vacuum path from the distal end of the drill string to the vacuum 65 be provided. The pressure measuring point 370a is downhole at the vacuum passage 47 provided near the distal end of the drill string. For example, the pressure measuring point 370a be within the drill head. The pressure measuring point 370b is above ground adjacent to the inlet for the vacuum 65 arranged. For example, the pressure measuring point 370b a transition between the pipe parts and the inlet to the vacuum 65 be. The vacuum 65 and the storage tank 67 may be positioned at a higher elevation than the drill string (eg, above ground) with the transition duct guide up (eg, vertical) from the adjacent drill string / drive unit 32 to the vacuum 65 extends. Another pressure measuring point can be on or within the vacuum 65 be provided for yourself. This measuring point can provide an indication as to whether the vacuum 65 works properly. The pressure measuring points are points along the vacuum path where pressure sensors 372 are arranged in fluid communication with the vacuum path. In this way, the pressure sensors can be used to take vacuum pressure readings representative of the real time vacuum pressure at the pressure measurement points 370a . 370b are. By measuring pressure at multiple points it is possible to better diagnose where a blockage can occur and to better evaluate the overall effectiveness of the system.

The pressure sensors 372 are preferably via an interface with the controller 50 connected and provide vacuum pressure data by the controller 50 used to monitor the status of the vacuum system. A deviation in vacuum pressure compared to the vacuum pressure associated with normal (ie, non-plugged) operation of the vacuum system may be a precursor clogging characteristic caused by the controller 50 is used as an indicator that the vacuum path is clogged. Therefore, if the controller 50 by means of the pressure data generated by the pressure sensors 372 be provided, a deviation in the vacuum pressure detected, which reaches a predetermined alarm level, the controller 50 perform an action that is suitable for reducing the probability that the vacuum passage 47 is completely blocked. For example, the controller 50 reduce the amount of thrust on the drill string 24 is applied, or can the rotational speed of the cutting unit 34 reduce (for example, the rotational speed of the cutting unit can be increased, decreased, stopped or reversed). The control 50 can also completely stop the thrust of the drill string or even retract the drill string until the pressure sensor 372 indicates that the vacuum pressure within the vacuum channel has returned to an acceptable level. In certain embodiments, the controller may cause the vacuum to cease vacuum pressure on the passage 47 exercise, and positive pressure can be on the passage 47 be exercised, so that the possible obstacle distally from the passage 43 blown out back to the cutting unit where the potential obstacle can be further reduced in size. Alternatively, vacuum may be on the air duct 43 be exercised to cuttings to the air duct 43 to pull while positive pressure on the passage 47 is exercised to clear the cuttings from the passageway 47 to blow. In other embodiments, the controller may 50 an alarm or warning message to the operator (eg using the monitor 54 , an alert light or an audible signal) that indicates that a vacuum clogging case has been detected. The control 50 may also provide actuation instructions / recommendations for preventing the vacuum passage from becoming clogged (eg, push-stop, reverse-thrust, etc.). In still other embodiments, the controller may cause the amount of drilling fluid provided along the hole to be increased when a clogged condition is detected. In an exemplary embodiment, the controller automatically lowers the thrust, increases the rotational speed of the cutting unit, and increases the amount of drilling fluid provided along the hole when a precursor clogging characteristic is detected. Any combination of the above actions can be done automatically by the controller 50 or manually by the operator.

In still other embodiments, the controller may 50 be interfaced to a vacuum pressure reading device (eg, a digital or mechanical display / pressure gauge) that indicates the vacuum pressure applied by the pressure sensor 372 was measured. Therefore, by monitoring the vacuum pressure reading, the operator may notice deviations in the vacuum pressure and accordingly modify the operation of the tunneling device to reduce the likelihood of clogging. For example, the operator may perform one or more of the remedial actions described above.

In one example, a precursor clogging characteristic is determined by the controller 50 detected when the vacuum pressure increases to a predetermined alarm level (ie, moves or skews in a direction extending away from the atmospheric pressure and to the full vacuum) having a smaller magnitude than the vacuum pressure associated with normal unclogged operating states. This would typically occur when a blockage begins to form at a downhole point from a given pressure measurement point (ie, the pressure measurement point is between the vacuum source and the plugging point). In another example, the precursor clogging characteristic is determined by the controller 50 detected when the vacuum pressure (ie, moving or skewing in a direction extending to the atmospheric pressure and away from the full vacuum) decreases to a predetermined alarm level which is smaller in magnitude than the vacuum pressure associated with normal unclogged operating conditions. This would typically occur when a blockage begins to form at a point between the source of the vacuum and the pressure measurement point. If a precursor clogging characteristic is detected, the controller may alert the operator of the precursor clogging condition (eg, with an audible or visual signal) and / or automatically modify the operation of the tunneling apparatus to prevent complete blockage of the vacuum channel.

Air flow in the air duct 43 may also act as an indication (ie, a precursor clogging characteristic) as to whether the vacuum path is about to become blocked. For example, a reduction of the air flow within the air duct 43 compared to the amount of air flow through the air duct 43 during normal operation of the vacuum system in an unclogged state, provide an indication that the vacuum path is about to become blocked. To the air flow within the air passage 43 to monitor, the controller can 50 via an interface with an airflow sensor 374 be connected to the amount of air flow within the air duct 43 measures. If the controller 50 detects that the air flow within the air passage 43 has fallen below a predetermined alarm level, the controller can 50 modify the operation of the tunneling device to prevent complete blockage of the vacuum channel as described above. Furthermore, as stated above, the controller 50 give an alarm to the operator and provide recommended remedial action.

In still other embodiments, the controller may 50 be connected to an air flow reader via an interface (eg, a digital or mechanical display / pressure gauge) that indicates the air flow rate passing through the sensor 374 was measured. Therefore, by monitoring the airflow readings, the operator may notice variations in airflow and accordingly modify the operation of the tunneling apparatus to reduce the likelihood of clogging. For example, the operator may implement one or more remedial actions as described above.

Additional structures may also be used to clear and / or prevent blockage of the vacuum passage 47 be provided. For example, jet streams may be on the drill head for guiding spray at the entrance to the passageway 47 be provided. Also, blockages mechanically by mechanical structures such. As rods, snake devices are cleared axially through each of the passages 43 . 47 have passed through.

E. Exemplary control interface

14 FIG. 12 shows an exemplary embodiment of an interface suitable for use with the tunneling apparatus of FIG 1 to 13 suitable is. As in 14 As shown, the user interface is a portable control unit capable of communicating with the controller 50 via a wireless communication technology or via a wired connection such. B. to communicate a connection. The wearable nature of the illustrated user interface of 14 allows a machine operator to use the tunneling device 20 from within the wellbore / shaft or from a farther point (eg, an above-ground point outside the wellbore / shaft).

Further referring to 14 is the user interface within a portable housing 520 (eg a box, a housing, etc.). The portable housing 520 has a base 522 and a cover 524 on that at the base 522 attached by a hinge or other structure. As in 14 shown is the cover 520 in an open position where the interface can be easily accessed by a machine operator. The cover 520 can also be moved to a closed position where the user interface within the enclosure 520 is protected. A seal can be made between the base 522 and the cover 524 be provided to prevent moisture in the enclosure 520 occurs when the cover 524 closed is.

Further referring to 14 For example, the user interface may be a control panel arrangement 530 that in the base 522 the enclosure 520 is arranged, and a steering monitoring indicator 532 having, on an inside surface of the cover 524 is appropriate. The control panel arrangement 530 has an ad 534 (please refer 17 ), which is a display device 536 , a suggestive light panel 538 and rows 540 has buttons / buttons. The control panel arrangement 530 Also includes a plurality of controls (eg, handles, knobs, switches, toggle switches, joysticks, levers, etc.) that can be manipulated by the machine operator to control operation of the tunneling apparatus 20 to control. For example, the control components may allow the operator: a) to direct the tunneling device; b) increase or decrease the amount of drilling fluid provided along the drill string; c) control the direction and speed of the thrust exerted on the drill string; d) provide emergency stop the vacuum or drill; e) Throttle settings for one or both of the motors 33 . 404 to modify; f) to switch between a drilling mode and a rod changing mode; and g) the rotational speed and / or rotational direction of the cutting unit 34 to control. All the above control functions can be achieved by the machine operator while the operator simultaneously operates on operating parameters (ie operating characteristics) of the tunneling device 20 on the screen display 536 supervised. Exemplary tunneling device operating parameters include feedback information such as: a) the hydrostatic pressure of the rotary drive 32a ; b) the hydrostatic pressure of the thrust drive 32b ; c) the engine speeds of the engines 33 . 404 ; d) the drilling fluid flow rate; e) the rotational speed of the cutting unit; f) the pushing speed of the drill string; g) the level of vacuum pressure of the vacuum line; h) the fuel levels of the engines 33 . 404 ; and i) a position of the steering control joystick.

During operation of the tunnel device 20 For example, the operator may continuously monitor monitoring parameters / factors indicative of a precursor clogging condition of the vacuum channel. For example, the control panel arrangement allows 530 the operator to monitor the vacuum pressure as well as the drilling fluid flow rate while having access to the various machine controls as enumerated above. In this way, when the operator notices a change in operating conditions indicative of a precursor clogging condition (eg, a change in vacuum pressure or a change in drilling fluid flow rate), the operator may promptly take a corrective action, such as the following. Increasing or decreasing the thrust, increasing or decreasing the rotation, increasing the drilling fluid flow rate or other corrective measures to prevent complete blockage of the vacuum passage.

Continue with reference to 14 is the steering monitor 532 as a screen display device capable of feeding from the camera 60 display. It will be appreciated that on-screen displays may include liquid crystal displays, plasma displays, active matrix displays, alphanumeric displays, emitter displays such as cathode ray tubes, or other display devices. The feed from the camera 60 may be a stream video feed or a sequence of still photo shots. Preferably, the display shows a position where the laser 42 to the goal 44 which allows the operator to monitor whether the drill string 24 a right line is preserved. When the operator notices that the drill string 24 has been moved out of the line, as by the laser 42 displayed from a center of the target 44 is moved away, the operator can take corrective action by generating a relative movement between the steering sleeve 36 and the main body 38 of the drill head by manipulation of one or more steering controls incorporated in the control panel assembly 530 are provided.

With reference to 14 to 16 has the control panel arrangement 530 various controls that enable the operator to perform most functions of the tunneling device 20 to control. For example, the control panel arrangement 530 Controls in the form of a steering joystick 550 , a Bohrdrosselschalters 552 , a vacuum throttle switch 554 , a bar change switch 556 , a rotation speed switch 558 , a control lever for manual rotation 560 , a manual / manual push / pull control lever 562 , an automatic drilling start button 564 , an automatic recovery button 566 , a drilling fluid control handle 568 , an automatic overrun push / pull control handle 570 , an emergency vacuum stop button 572 , an emergency stop button 574 and a stop alert / reminder alert message 576 , As in 17 shown, points the row 540 on buttons (ie control buttons) on the display 534 is provided, a stop alarm test button 600 , a stop alarm alert cancel button 602 , a vacuum stop valve opening / closing button 604 , a drill fluid on / off button 606 , an F remote switch alarm cancel button 608 , a maintenance button 610 to access one or more diagnostic screens on the display device 536 , a rise button 612 to increase values or scroll through on-screen display options 536 , a descent button 614 to lower values or scroll through options on the screen display 536 and an enter key 616 for selecting options or deleting errors on the display device 536 on. The Indicator Light Control Panel 538 can lights such. An emergency stop stop indicator, an engine warning light, a remote stop lock mode light, a stop alarm status light, a drilling fluid light, a mud storage tank full light, an engine warning light, a remote powering off process light, an automatic overboosting light, a vacuum interception valve closing / closing light, a bar changing mode active light, and a remote powering off operation light.

Referring to 17 is the on-screen display device 536 the ad 534 able to display a main control screen as well as other diagnostic and information screens by programming the controller 50 be generated. The control 50 Typically, a programmed computer network having one or more data processors may include memory (eg, for storing various parameters and settings) and other components. An exemplary computer control system having components suitable for use in systems in accordance with the principles of the present invention is disclosed in U.S. Patent Application Nos. 12 / 252,879, 12 / 252,883 and 12 / 598,560, which are incorporated herein by reference in their entirety be made the subject of the application.

The main control screen of the display device 536 is in 18 shown. The main control screen provides a tunneling device operator with a significant amount of feedback information concerning various systems of the tunneling device. The feedback information may be in various forms such. Numeric readout data, bar graphs or other display formats. The feedback information may be derived from data generated by sensors used to monitor the operation of the various system components. Referring to 18 The main control screen displays feedback information indicative of a hydrostatic drive pressure 650 (in pounds per square inch or bar) of the rotary drive 32a , a hydrostatic drive pressure 652 (in pounds per square inch or bar) of the thrust drive 32b , a motor speed 654 of the main engine 33 (in rotations per minute), a motor speed 656 the vacuum motor 404 (in rotations per minute), a drilling fluid flow rate 658 (in gallons per minute or liters per minute), a bar chart 660 , which characterizes the speed of the rotary drive 32a is a bar chart 662 , which characterizes the speed of the thrust drive 32b is.

The main display also shows a percentage of atmospheric pressure 664 , which is indicative of vacuum pressure at a particular point (a reading point of one of the sensors 372 ) along the vacuum path extending from the distal end of the drill string to the source of the vacuum 65 extends. As shown, 100% corresponds to the atmospheric pressure and 0% to a pure / complete vacuum. In other embodiments, the main display may include multiple vacuum read data corresponding to different pressure measurement points along the length of the vacuum path (eg, measurement points on the drill bit, at the transition from the drill string to the vacuum source, and at the vacuum source). The main display also has a percentage of thrust capacity in use 665 , a main engine fuel pressure gauge 666 , a vacuum engine fuel pressure gauge 668 and a steering joystick position sensor 670 on.

The bar change switch 556 the control panel arrangement 530 allows an operator to use the tunnel device 20 between a rod change mode (ie, an escape mode) and a tunnel mode. The Vacuum break valve 402 connects in the tunnel mode the vacuum 65 in fluid communication with the vacuum passage 67 that goes through the drill string 24 extends. The valve 400 is also open, so the liquid pump 63 in fluid communication with the drilling fluid passageway 45 that's through the drill string 24 is defined. In addition, the vacuum motor 404 , the main engine 33 and the hydrostatic drive pressures of the drives 32a . 32b all set to provide maximum performance when needed. For example, the vacuum motor 404 be operated in a high idle mode and the drives 32a . 32b can be operated in high drive pressure modes. In addition, the rotary drive 32a in a rotation mode in which the rotary drive 32a continuous rotation of the bushing rotation drive element 306 in either a clockwise or counterclockwise direction, such as by manipulation of the manual rotation control lever 560 or an automatic rotation setting.

When the operator the tunnel device 20 from the tunnel mode to the bar change mode by means of the switch 556 switches several actuations are automatically implemented by the computer control system of the tunneling device. For example, the vacuum interrupter decouples 402 the vacuum 65 from the vacuum passage 47 the tunnel device 20 , Furthermore, the drilling fluid valve closes 400 so as to facilitate the fluid communication between the fluid pump 63 and the drilling fluid passage 45 the tunnel device 20 to decouple. In addition, the vacuum motor 404 automatically switched to idle to run in a low idle mode. In addition, the hydrostatic rotary drive 32a and the thrust drive 32b operated in low hydrostatic drive pressure modes. In addition, the rotary drive 32a in an oscillation mode in which a manipulation of the manual rotation control lever 560 causes the bushing drive element 309 is oscillated back and forth about a longitudinal center axis, with the longitudinal center axis of the drill string 24 matches the linking of the bushing drive element 309 with a corresponding connector means for transmitting torque (eg, a hex stump) of a pipe part to be added to the drill string.

To add a pipe part to a drill string, the tunneling device is switched from the tunnel mode to the rod change mode. The bar change mode active light 642 lights up when the bar change switch 556 is switched to the bar change mode. When the tunneling apparatus is in the bar change mode, the drive unit becomes 32 decoupled from the most proximal tubular part of the strand of pipe parts and the drive unit 32 is withdrawn to a most proximal position. Thereafter, the tubular member to be added to the strand is brought into coaxial alignment with the drill string as well as the sleeve drive member 309 the drive unit 34 placed. The operator then presses the manual rotation control lever 560 , which causes the bushing drive element 309 oscillates while at the same time the manual thrust lever 569 is pressed, which causes the thrust drive 32b the drive unit 32 moved in a distal direction. Because the drive unit 32 moved in the distal direction, simplifies the oscillation of the bushing drive element 309 linking the plug means for transmitting torque of the pipe member being added within the bushing rotary drive member 309 , Continued distal movement of the drive unit 32 slides the plug means for transmitting torque of the pipe part being added into the plug rotation drive member 309 and then causes the distal end of the tube member being added to engage the proximal end of the most proximal tubular portion of the drill string. An oscillation by the rotary drive 32a the drive shaft of the tubular member being added simplifies coupling of the torque transmitting connector means to the proximal end of the most proximal tubular member within a corresponding torque transmitting sleeve means provided on the drive shaft adjacent the distal end of the tubular member being added. In this way, the engagement between the distal end of the tubular member that is added and the proximal end of the most proximal tubular member is simplified. After the tube part that is added and the most proximal tube part are latched in, the operator can change the bar change switch 556 switch back to the thrust mode and tunnel operation can be resumed.

To the tunnel device 20 To steer, the operator can use the steering joystick 550 manipulate, allowing a relative movement between the main body 38 the drill head and the steering sleeve 36 is caused. By monitoring the position of the laser 42 relative to the destination 44 on the steering monitor 532 the operator can determine how the drilling unit should be steered. During steering, the postion of the joystick on the steering joystick position indicator becomes on the main control screen of the display device 536 shown.

To the rotation of the cutting unit 34 The operator can control the manual rotation control lever 560 manipulate. An upward movement of the manual rotation control lever 560 from a neutral position increases progressively the rotational drive speed of the cutting unit 34 in a counterclockwise direction, while a downward movement of the manual rotation control lever 560 progressing from the neutral position, the rotational drive speed of the cutting unit 34 increased in a clockwise direction. The rotation speed switch 558 allows different ranges of rotational drive speeds to be selected. For example, see a first position of the rotational speed switch 558 a high speed / low torque range, a second position of the rotation speed switch 558 provides a medium speed / middle torque range and a third position of the rotation speed switch 558 provides a low speed / high torque range. The exact speed within a given selected range is determined by the position of the manual rotation control lever 560 controlled. Once a high-yielding speed has been determined, the operator can start the automatic drilling start button 564 Press, which activates an automatic drilling mode in which the desired rotational drive speed is automatically maintained when the operator presses the manual rotation control lever 560 lets go. Once the rotational drive speed is set to the automatic drilling mode, the amount of thrust that is transmitted to the drill string by the thrust drive 32b is fed by the automatic overrun push / pull control knob 570 set. After the tunneling has been stopped to add another pipe part to the drill string, the rotational drive speed can be automatically adjusted to the recently secured rotational drive speed by pressing the automatic resume button 566 be reset.

The automatic boring highlighted 638 Steady when auto-drill mode is active, flashes when auto-mode is in standby (eg during a bar change) and off when auto-drill mode is off. Manipulation of one of the levers 560 . 562 After the automatic drilling mode has been set, the automatic drilling mode ends and sets the system back to the manual control mode. The display device 536 also displays the percentage of total available thrust used at a given time.

The manual push / pull control lever 562 is used to control the thrust or retraction exerted on the drill string when the tunneling device 20 not in automatic drilling mode. For example, the manual push / pull control lever 560 can be pushed upward from a neutral position to progressively increase the amount of thrust exerted on the drillstring, and can be pulled down from the neutral position to progressively increase the amount of retraction that occurs on the drillstring Bohrstrang is exercised. The drilling fluid control knob 568 Can be used to control the amount of drilling fluid required for the drill string through the pump 63 is provided. For example, by rotating the knob counterclockwise, the flow rate of the drilling fluid is increased and by rotation of the drilling fluid control knob 568 in the Uhrzeigerrichung the flow rate of the drilling fluid, which is provided for the drill string. As stated above, the flow rate of the drilling fluid is displayed on the screen 536 displayed. In addition, the drill fluid illuminates 630 when drilling fluid is provided for the drill string.

The drill throttle switch 552 and the vacuum throttle 556 enable according to the main engine 33 and the vacuum motor 404 to be set manually to a high throttle setting or a low throttle setting.

Embodiments of the present disclosure may utilize a memory coupled to a control processor to perform the methods and functions described herein. A memory may be a computer-readable medium encoded with a computer program, software, computer-executable instructions, instructions capable of being executed by a computer, etc., to be executed by a circuit, such as a computer. As a central processor and / or a machine control. For example, a memory may be a computer-readable medium storing a computer program, an execution of the computer program by a central processor that generates one or more signals from sensors, a measurement of signals, a calculation using one or more algorithms, and outputting Control signals to various motors, valves, pumps or other machine components as disclosed herein. Output from the computer / central processor can also be used to control the content and appearance of the screens displayed by the display devices disclosed herein.

From the foregoing detailed description, it will be apparent that modifications and variations can be made in the devices of the disclosure without departing from the spirit or scope of the invention.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2007/143773 [0005]

Claims (15)

Tunnel device with: a drill string formed by a plurality of drill string members and having a proximal end and a distal end; a drill head attached to the distal end of the drill string and having a cutting unit; a rotary drive which provides a torque for rotating the cutting unit; a thrust drive for applying thrust to the drill string; a vacuum system for removing sludge generated by the cutting unit during operation of the tunneling apparatus; a drilling fluid system for providing drilling fluid adjacent the cutting unit during operation of the tunneling device; and a control system for controlling the operation of the tunneling apparatus having an operator interface having a thrust control element for controlling the thrust drive, a rotation control element for controlling the rotary drive and a drilling fluid control element for controlling a drilling fluid flow rate provided by the drilling fluid system, the operator interface further comprising a display showing an indication of the vacuum pressure level corresponding to the vacuum system, wherein the operator interface is configured so that the operator can monitor the vacuum pressure level while having access to the pusher control, the rotation control member, and the drilling fluid control member. A tunneling apparatus according to claim 1, wherein the display comprises a screen display indicating the indication of the pressure level. The tunneling apparatus of claim 2, wherein the display device further displays an indication of the drilling fluid flow rate. The tunneling apparatus of claim 1, wherein the vacuum system includes a vacuum source, a first passage portion extending along the drill string, and a second passage portion providing a transition between the first portion and the vacuum source. The tunneling apparatus of claim 4, further comprising a pressure sensor for use in receiving vacuum pressure readings at the second passage portion, the vacuum pressure readings providing a basis for indicating the vacuum pressure level indicated by the display. Tunneling device according to claim 1, in which the operator interface is portable. The tunneling apparatus of claim 6, wherein the operator interface communicates with a main system controller through a wireless connection. A tunneling apparatus according to claim 6, wherein the user interface communicates with the main system controller through a link. Tunneling device according to claim 6, wherein the user interface is housed in a carrier housing. Tunneling apparatus according to claim 9, wherein the carrier housing has a base and a cover, wherein a steering indicator is attached to the cover, wherein the steering indicator displays a position of a laser relative to a target and wherein a control panel assembly is mounted within the base. The tunneling apparatus of claim 10, wherein the control panel assembly comprises a steering control member, the thrust control member, the rotation control member, the drilling fluid control member, and the display indicative of the indication of the vacuum pressure level corresponding to the vacuum system. A tunneling apparatus comprising: a drill string formed by a plurality of drill string members and having a proximal end and a distal end; a vacuum passage extending along the drill string; a drilling fluid passage extending along the drill string; a drill head attached to the distal end of the drill string and having a cutting unit; a rotary drive providing torque for rotating the cutting unit and having a rotation mode and an oscillation mode; a thrust drive for applying thrust to the drill string; a vacuum source for applying vacuum pressure to the vacuum passage to draw sludge generated by the cutting unit during operation of the tunneling apparatus; a drilling fluid pump for pumping drilling fluid along the drilling fluid passage; a vacuum interrupter valve for connecting and disconnecting fluid communication between the vacuum source and the vacuum passage; a drilling fluid valve for opening and closing the fluid communication between the drilling fluid pump and the drilling fluid passage; wherein the tunneling apparatus is operable in a drilling mode wherein: a) the vacuum source is connected to the vacuum passageway; b) the drilling fluid pump in fluid communication with the Drilling fluid passage is; and c) the rotary drive is in the rotation mode; wherein the tunneling apparatus is in an outbreak mode wherein: a) the vacuum source is decoupled from the vacuum passage; b) the drilling fluid pump is not in fluid communication with the drilling fluid passageway; and c) the rotational drive is in the oscillation mode; and the tunneling apparatus comprises an electronic control system that, when the tunneling device is switched by an operator from the drilling mode to the breakout mode, automatically causes: a) the vacuum interception valve to cut off fluid communication between the vacuum source and the vacuum passageway; b) that the drilling fluid valve closes the fluid communication between the drilling fluid pump and the drilling fluid passageway; and c) that the rotary drive operates in the oscillation mode. The tunneling apparatus of claim 12, wherein when the tunneling device is switched by the operator from the breakout mode to the drilling mode, the electronic control system automatically causes: a) the vacuum interception valve connects the vacuum source to the vacuum passageway; b) that the drilling fluid valve opens the fluid communication between the drilling fluid pump and the drilling fluid passage; and c) that the rotary drive operates in the rotation mode. The tunneling apparatus of claim 12, wherein the vacuum source is energized by a vacuum motor operable in a low-idle mode and a high-idle mode, wherein the vacuum motor is in the low-idle mode when the tunneling apparatus is in the break-out mode and is in the idle mode; when the tunneling apparatus is in the drilling mode, and wherein the electronic controller automatically switches the operation of the vacuum motor from the high idle mode to the low idle mode when the operator switches the tunneling apparatus from the drilling mode to the breakout mode. The tunneling apparatus of claim 12, wherein the propulsion drive is operable in a low pressure driving mode and in a high propulsion pressure mode, the propulsion engine operating in the low pressure driving mode when the tunneling device is in the escape mode and the propulsion driving in the high driving pressure mode when the tunneling device is in the drilling mode and wherein the electronic controller automatically switches the thrust drive operation from the high drive pressure mode to the low drive pressure mode when the operator switches the tunneling device from the drilling mode to the breakout mode.

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