FI121483B - Procedure for handling rod-like pieces, rod supports and rock drilling unit - Google Patents

Description

Method for handling rod-shaped bodies, intermediate guide and rock drilling unit

Background of the Invention

The invention relates to a method for treating rod-shaped bodies on a feed beam of a mining device. The drilling rods, rock bolts and similar rod-like pieces used in mining operations are transported to and from the center of the mining unit by means of an exchange device. The center rods are supported during operation by one or more spacer guides mounted on the feed beam. For changing the bars, the mining implement and the intermediate guide are driven to 10 replacement positions, where the alternator can be pivoted in the transverse direction of the feed beam, thereby opening the closing member of the intermediate guide. When the changeover device is rotated back to its home position, the closing element of the intermediate controller closes.

The invention further relates to a spacer and a rock drilling unit provided with a spacer.

The field of the invention is described in more detail in the preambles of the claims themselves.

Ka Ground drilling uses a rock drilling unit, with a rock drill and a tool attached to provide a drill hole for the material to be processed. The tool may comprise a drill rod and a drill bit connected to its outermost end 20 or, in the case of drilling long drill holes, several drill rods connected in series to form an extension rod arrangement. The drill rods are often quite long, requiring the support to be supported from the portion between the drill machine and the drill bit by means of an intermediate guide mounted on the feed beam. The tap hole has a center hole through which the rod is fitted. The center opening 25 has a closing member which can be opened during drill rod replacement. Intermediate controls can also be used for example. bolting devices.

Fl 74778 discloses that the closing member is held in the closed position by a spring force. However, it has been found that the locking means by the spring is insufficient.

BRIEF DESCRIPTION OF THE INVENTION It is an object of the present invention to provide a novel and improved method of handling rods, as well as a further novel and improved intermediate guide and a rock drilling unit with such.

The method according to the invention is characterized in that the closing member of the intermediate guide is locked in a rigid shape when it is in the closed position and the opening of the closing member is prevented by the forces exerted on the genitalia.

The intermediate guide according to the invention is characterized in that the closure member is locked by the rigid locking members when it is in the closed position, whereby the closure member is prevented from being opened from the drill rod by the forces acting on the genital.

The rock drilling unit according to the invention is characterized in that the closing element of the intermediate guide is locked in a locked position when it is in the closed position, whereby the closing element is prevented from being opened by the forces acting on the bar from the drill rod.

The idea of the invention is that the closing element of the intermediate guide is locked in a rigid shape when it is in the closed position.

An advantage of the invention is that the forces exerted by the drill rod or other mining tool on the closure member are not capable of unlocking the rigid lock during normal operation. The force generated by the power unit need only keep the mutual position of the form locking members unchanged and not be dimensioned so as to be able to absorb all the opening forces exerted by the drill rod to the closing member. With the locking member locking rigid, it is possible to ensure that the rod remains in the intermediate guide-20 in all situations. This is a clear advantage for prior art solutions in which the closure member is secured solely by spring force.

The idea of one embodiment is to lock the closing member of the intermediate guide by means of locking members which are lockable.

The idea of one embodiment is that the mutually engaging interlocking locking members acting on the closure member include at least two elongate transfer openings and a pivot pivot between them and sliding along the transfer openings.

The idea of one embodiment is to convey to the locking means the movement for unlocking the shape lock by means of a push rod which is adapted to move substantially only in its longitudinal direction.

The idea of one embodiment is that the intermediate guide body has an elongated first transfer opening whose center line is aligned with the guide member. The genitalia has an elongated second delivery port with a curved centerline disposed transversely to the first port 35. A transverse pivot pin is disposed through said transfer apertures and is moved in a linear direction by the control member. The pivot pin and the transfer openings 3 are arranged to form a shape lock with each other to hold the closing member in the closed position. When the pivot pin is moved by the control member in the direction of the first transfer opening, said contour locking opens and at the same time the closing member begins to move towards the open position.

The idea of one embodiment is that the pivot mechanism of the exchange device is connected to a separate pushing surface adapted to move in the transverse direction of the feed beam with the exchange device. The pushing surface is adapted to push the pusher bar of the intermediate guide. The thrust surface may be arranged by the pivot mechanism to move substantially only in a linear direction.

10 Brief Description of the Figures

Some embodiments of the invention will be explained in more detail in the accompanying drawings, in which Fig. 1 is a schematic and side elevational view of a mining device equipped with two booms and drilling units and 15 bolting devices, Fig. 2 Fig. 5 and 6 show schematically and perspective the operation of the rocker drilling unit in the situation where the intermediate guide is closed, Fig. 4 schematically shows the operation of the intermediate guide in Fig. 3, the locking member and the forces acting on it.

In the figures, some embodiments of the invention are shown in simplified form for clarity. Like parts are denoted by like reference numerals in the figures.

DETAILED DESCRIPTION OF THE INVENTION The mining device 1 shown in Figure 1 comprises a movable platform 2 fitted with one or more booms 3. The first boom 3a is a drilling boom and is provided with a rock drilling unit 4. The drilling unit 4 comprises a rock drilling machine 5 7. A tool 8 may be coupled to the rock drill machine 5, which may comprise a plurality of 35 successive drill bars 9 which are secured to one another by means of joints, such as 4 threaded joints. Further, at the end of the outermost drill rod is a drill bit 10, the drill studs of which drill a hole 12 in the rock 11. The rock drill 5 may comprise a percussion device for imparting impulses to the tool 8 for conveying them to the drill bit 10 and further 8 can be rotated about its longitudinal axis during drilling. The drilling unit 4 may further be provided with a rod cassette 13 supported on a feed beam 6. The rod cassette 13 may be equipped with extension rods 9 and other drilling tools required for long hole drilling. In connection with the bar cassette 13, there is at least one replacement device 14 for moving the drilling tool 10 between the bar cassette 13 and the bore shaft, i.e. the hub K. The outermost end portion of the feed beam 6 may have a holding device 15 with jaws for grasping the tool 8 and centering it on the hub K. Further, the portion between the rock propeller 5 and the holding device 15 may have one or more spacer guides 16 arranged to move the feed beam 6 with rock drill 5 15.

The second boom 3b of the mining device 1 shown in Figure 1 is provided with another mining unit 40 comprising a mining device 17 for handling mining tools 18, such as rock bolts, injection tubes or the like. These tools may also need to be supported by the spacer 16. Thus, for example, the bolting device may also have an exchange device 14 and a magazine for storing rod-shaped tools. Further, it may be provided with a spacer 16 according to the invention and means for operating it.

Figure 2 shows a rock drilling unit 4 with a feed beam 6 provided with a rod cassette 13 into which drill bits 9 or other rod-like tools for drilling can be stored. The replacement device 14 may be provided in connection with a rod cassette 13. At the outermost end of the feed beam 6 is a holding device 15. The intermediate guide 16 is supported on the feed head 6 and is adapted to move in accordance with the movements of the rock drill 5. In the situation of Fig. 2, the rock drill 5 and the spacer 16 are moved backwards B to a shifting station V where a drill bar 9 can be removed from the center magazine K or a drill bar can be removed from the center K for storage as a bar.

Fig. 3 shows a spacer controller 16 according to the invention and means for operating it. The intermediate guide 16 comprises a body 19, by means of which it can be movably fitted to the feed beam 6. Further, the spacer guide 16 comprises a center opening 20 through which a rod-like tool, such as a drill rod, can be fitted. The center hole 20 is arranged at the center K of the rock drilling unit 4 or other mining implement. The periphery of the center opening 20 has a replacement opening 21 which may be completely or partially closed by a closing member 22, which may be a jaw piece which may be connected to the body 19 by a pivoting joint 23. corresponding to the hub K or remove from the hub K. When the closing member 22 is closed, the drill rod access from the hub opening 20 is prevented. The opening movement of the closing member 22 is arranged to depend on the operation of the changeover device 14 in the changing position. Turning the changeover device 14 from the basic position 10 shown in Figure 3 to the situation shown in Figure 4 is adapted to cause the closing member 22 to open and the opening 21 to be released.

Figure 3 further shows a guide member 24 adapted to transmit the required opening movement to the genital member 22. The guide member 24 may be an elongated push rod 25 which may be supported on the body 19 so that it can move substantially only in its longitudinal direction. Thus, the push rod 25 can thus only transmit linear motion L to the actuating mechanism of the closing member 22. The genital member 22 is adapted to be actuated by a Shear force which may be exerted by one or more force members 26, such as a spring or the like. The piston member 26 may be adapted to act on the push rod 25 and move it to its home position when the push rod is not affected by external force. The push rod 25 may comprise a roller or similar rolling member 27 at its end of the changeover device 14, which allows movement of the intermediate guide 16 relative to the changeover device 14 when the threaded joints are unscrewed or closed and axial movement is required.

Figure 3 also shows that the changeover device 14 and its integrated barrel magazine 13 may be mounted on a pivoting piece 28 in the direction of the feed beam 6, which may be pivoted about its longitudinal axis by a suitable pivoting device 29. by means of a thrust surface 30 in a substantially linear direction. The pushing surface 30 is disposed axially away from the changing device 14 and is connected by a pivot mechanism 31 to the pivoting rod 28 and the feed beam 6. The rotation of the pivoting rod 28 affects both the movements of the pivoting device 13 and the pushing surface 30. The purpose of the pivot mechanism 31 is to keep the direction of movement of the pushing surface 30 parallel to the push rod 25 so that the push rod is not subjected to unnecessary stress. The pivot mechanism 31 may comprise at least one first arm 32 pivotally connected to a feed beam 6 and at least one second pivot 33 pivoted to a pivot bar 28. The pivot bar 28 may include a crank 34 which can provide pivot movement to an elongate transfer port on the second arm 33. 36. The transfer port 36 can provide a relatively small travel distance to the thrust surface 5 30 relative to the travel required by the exchange device 13. Thus, by varying the dimension of the transfer port 36, the resulting travel distance can be adjusted.

Figures 3 and 4 further show that the push rod 25 may be coupled to a transverse pivot pin 37 which may be adapted to move under the control of an elongated first transfer opening 38 formed in the body of the intermediate guide 10. The center line of the transfer opening 38 is arranged substantially parallel to the linear movement of the push rod 25. Further, the graft member 22 may have a second transfer port 39 whose center line may be transverse to the first transfer port 38. Further, the center line of the second transfer opening 39 may be curved. The first transfer port 38 of the En-15 provides linear movement of the push rod 25 and, together with the second transfer port 39 and the pivot pin 37, provides a form-locking member 22. In locking, the force member 26 only needs to , 20 and the locking is not dependent on the force exerted by the force member 26.

In some cases, the second transfer opening 39 may comprise a locking recess (not shown) in its outermost portion, or the radius of curvature of the transfer opening 39 may change in its outermost portion, thereby further securing the locking between the pivot pin 37 and the transfer opening 39. Only when the pivot pin 25 25 is pushed out of the locking recess by the push rod 25 25 can the pivot pin 37 slide along the transfer port 39 and pivot the genital 22 into the open position with respect to the hinge 23.

Figures 5 and 6 further illustrate, in perspective views, the interaction of the intermediate controller 16 and the changeover device 13.

Figure 7 illustrates the action, shape locking and forces exerted on the genital 22. From the drill rod 9 in the center opening 20, transverse forces F2, F3 are applied to the genital member 22 which tend to rotate the genital member 22 with respect to its pivot joint 23 in an open direction. The pivot pin 37 is then subjected to a force FR on which the transfer port 38 provides a counter force 35 FT. Further, as the drill rod 9 rotates in the center hole 20, frictional forces are generated between the drill rod 9 and the genital 22. These produce a pivoting force 7 F1 which also tends to open the closing member 22 with respect to its pivoting joint 23. Also, the force F1 exerts on the pivot pin 37 the force FR shown in the figure, for which the locking force forms a counter force FT. Thus, the closing member 22 cannot pivot to the open position due to the action of any force transmitted through the drill rod 9. Only the linear movement L of the pivot pin 37 in the direction controlled by the transfer port 38 can release the shape lock. As the pivot pin 37 slides in the transfer opening toward its right extreme position, the pivot pin 37 also pushes the closure member 22 relative to its pivot joint 23 toward the open position. When the closure member 22 is fully open, the pivot pin 37 is positioned at the right end of each of the transfer openings 38, 39, as can be seen in Figures 4 and 6.

It will be appreciated that the rigid contour locking can be accomplished in ways other than those shown in the examples above. For example, the shapes and directions of the transfer apertures relative to one another can be arranged in other ways. Here, too, a rigid locking 15 must be provided between the transfer apertures and the pivot pin relative to the directions of forces that open the closing member.

Although the rock drilling unit is illustrated in Figures 3-7, the solutions and operating principles disclosed therein can of course also be applied to a bolting device or to any mining device intended to handle rod-shaped pieces in a mine.

20 In some cases, the features described in this application may be used as such, despite other features. On the other hand, the features disclosed in this application may be combined, if necessary, to form different combinations.

The drawings and the description related thereto are only intended to illustrate the idea of the invention. The details of the invention may vary within the scope of the claims.

Claims (19)

A method of handling closure pieces in a mining device, in which method: operations associated with a drill heel (12) are performed with a mining work unit (4, 40), comprising: a mining work device (5, 17); a ma tar bar (6); and a feeder (7), by means of which the mining device (5, 17) is moved on the feeder beam (6) in the feed direction (A) and in the return direction (B); a closure (9, 18) is moved by means of a swapping device (14) belonging to the mining unit (4, 40) to the center (K) of the unit and correspondingly away from the center (K); the rod (9, 18) is coupled in the center (K) to the mining device (5, 17); the bar (9, 18) is supported during the operation which is directed at the borehole (12) by means of at least one closure support (16) in the portion between the front of the mining device (5, 17) and the front of the feed beam (6); the mining device (5, 17) and the closing support (16) are moved to a switching position (V) after the operation in the return direction; and a switching device (13) is pivoted in the transverse direction of the feed beam (6) to the center (K), the same pivoting movement also affecting the locking means (24) of the closing support and opening the locking member (22) of an open position for receiving the closure (9, 18) to the center (K) or for removal from the center (K); characterized in that the locking member (22) of the closing support is read stiffly when in a closed position, and the opening of the locking member (22) due to the action of forces directed from the lock (9,18) to the locking member (22) is prevented. 2. A method according to claim 1, characterized in that the locking member (22) of the closing support is read by means of reading means (37, 38, 39. which can be read-read with each other; a movement which opens the read-form is conveyed to the reading means (37, 38, 39) by means of a push rod (25) which is arranged to move substantially only in its longitudinal direction; the locking member (22) is pushed up with the linear movement (L) of the push rod (25); and the locking member (22) is closed while the changing device (14) is pivoted away from the center (K), and the shape reading of the locking means (22) is performed. 3. A method according to claim 2, characterized in that the sliding movement is mediated by a separate sliding surface (30) coupled to the sliding rod (25) of the swivel mechanism (13) of the switching device (13). 5 4. A method according to claim 3, characterized in that the opening movement is mediated by means of a linkage mechanism (31) from the swivel mechanism of the switching device to the sliding surface (30); and the direction of the sliding surface (30) is held substantially unchanged in relation to the sliding rod 10 (25) by means of the guide mechanism (31) during the opening movement. 5. Method according to any of the preceding claims, characterized in that several rods (9, 18) are stored in a closing magazine (13) in the exchange device (14) and the rods (9, 18) are supported parallel to one another. 15 Method according to any of the preceding claims, characterized in that the shape reading is directed in particular to forces (F1) which are induced by the rotation of the bars (9, 18) which attempt to eject a torque to the locking means (22) in its opening direction. . 7. Closing support, comprising: a frame (19) which can be arranged in a mining beam (1) master beam (6); a center aperture (20) through which a closed mining tool (9, 18) can be arranged to pass when in a center (K); At least one locking member (22) having a closed position and an opening position, wherein the locking member (22), when closed, is arranged to at least partially close a switch opening (21) on the center opening (20) circuit and preventing the tool from moving transversely from the center aperture (20); At least one force member (26) arranged to form the final force for holding the locking member (22) in the closed position; and at least one control means (24) arranged to convey to the locking member (22) the power to move the locking member (22) from the closed position to the open position; Characterized in that the locking member (22) is read with rigid reading means (37, 38, 39) when in the closed position, the opening of the locking member (22) due to the inversion of forces directed from a drill rod (9). ) to the barrier (22) is prevented. 8. A closing support according to claim 7, characterized in that the locking member (22) has an elongated moving opening (39); the control means (24) is coupled to the locking means (22) with a pivot pin (37) arranged to slide in the moving opening (39) when the opening means (24) is directed to an opening movement; and that the reciprocal movement of the pivot pin (37) and the moving aperture (39) is arranged to open the mold reading of the locking member (22) and to move the locking member (22) to the open position. 9. Close support according to claim 7 or 8, characterized in that the control means (24) is arranged to direct to the locking means (22) only one movement in a linear direction. Closing support according to claim 9, characterized in that the control means (24) is a pushing rod (25) which is supported against the body (19) and which is arranged to move relative to the body (19) substantially only in its length. Closing support according to any of the preceding claims 7-10, 20, characterized in that the body (19) has an elongated first moving opening (38), the center line of which is arranged parallel to the control means (24); the latching member (22) has an elongated second moving opening (39), the center line of which is curved and arranged transversely to the first moving opening (38); a transverse pivot pin (37) is arranged through said moving openings (38, 39); the pivot pin (37) and the moving apertures (38, 39) are arranged to form with each other the mold reading to keep the locking member (22) in the closed position; and that the movement of the pivot pin (37) with the control means (24) in the direction of the first moving opening (38) is arranged to open said mold reading. A closing support according to any of the preceding claims 7-11, characterized in that there is a rolling means (27) at one end of the pushing rod (25). A rock drilling unit comprising: a rock drilling machine (5) to which at least one drill rod (9) can be connected; 5 a feed beam (6) against which the rock drill (5) is supported; a feeding device (7) by means of which the rock drilling machine (5) can be moved on the feed beam (6) in the feeding direction (A) and in the return direction (B); at least one exchange device (14) for moving the drill rod (9) to the center (K) of the drilling unit (4) and correspondingly away from the center room (K); pivoting means for pivoting the exchange device (14) in the transverse direction of the feed beam (6); at least one closure support (16) for supporting a drill rod (9) present in the center (K) in the portion between the front of the rock drill (5) and the front of the feed beam (6); and which closing support (16) has: a frame (19); a center aperture (20) through which the drill rod (9) can be arranged to act when in the center (K); at least one locking member (22) having a closed position and an open position, the locking member (22), when closed, is arranged to close at least partially a switch opening (21) on the center opening (20) circuit and preventing the drill rod (9) from transversely moving away from the center aperture (20); at least one force member (26) arranged to form the final force for holding the locking member (22) in the closed position; and a control means (24) arranged to convey to the locking member (22) the opening force for moving the locking member (22) from the closed position to the open position. and in which the closing support (16) is arranged to move during drilling on the feed beam (6) in the feeding direction (A) together with the rock drilling machine (5) and correspondingly in the return direction (B), when the rock drilling machine (5) and the closing support ( 16) is moved to a switching position (V); and further, in which the pivoting of the switching device (14) in the switching position (V) is arranged to actuate the control means (24) of the closing support and to move the locking means (22) to the open position for receiving the drill rod (9) to the center (K) or to removal from the center (K); characterized in that the closure member (22) of the closing support is read form-read when in the closed position, whereby the opening of the locking member (22) due to the influence of forces directed from the drill rod (9) to the locking member (22) is prevented. Rock drilling unit according to claim 13, characterized in that the closing support (24) of the closing support is a pushing rod (25) which is supported against the closing support body (19) and which pushing rod (25) is arranged to move relative to the support (19). essentially only in its longitudinal direction; and that the rock drilling unit (4) has a separate slide surface (30) coupled to the pivot mechanism of the switching device, which is arranged to move in the transverse direction of the feed beam (6) with the switching device (14). Rock drilling unit according to claim 14, characterized in that the changing device (14) and the sliding surface (30) are arranged axially spaced from one another in the longitudinal direction of the feed beam (6). 16. A rock drilling unit according to claim 14 or 15, characterized in that the sliding surface (30) is arranged by means of a guide mechanism (31) to move in the longitudinal direction of the sliding rod (25) during the swivel movement of the changing device (14). Rock drilling unit according to claim 16, characterized in that the rock drilling unit (4) has a swing bar (28) in the direction of the feed beam (6), to which the swing bar changing device (14) is fixed and which swing bar (28) is arranged to be turned in relation to its longitudinal axis by means of a pivot device; and that the sliding surface (30) is coupled by means of at least one articulated first arm (32) to the feeder beam (6) and by means of at least another articulated arm (33) to the pivot bar (28). 18. Drilling unit according to any of the preceding claims 14-17, characterized in that the magnitude of the linear surface (L) sliding surface (30) is arranged less than the transverse movement of the switching device (14) in the transverse direction of the feeder beam (6). The rock drilling unit according to any of the preceding claims 13-18, characterized in that the exchange device (14) has a closing magazine (13) in which several drill rods (9) can be stored parallel to one another.