FI122797B - Rock drilling rig, procedure for moving a mining vehicle boom and mining vehicle - Google Patents

Description

Rock drilling rig, method of moving boom of mining vehicle, and mine vehicle

Background of the Invention

The invention relates to a rock drilling device comprising a movable base 5 having a lower body and an upper body. The top frame is equipped with a boom with a drilling unit for drilling holes in the rock. The boom can be swiveled by means of the upper frame on the front of the rock drilling rig so that drill holes can also be drilled on the sides of the rock drilling rig. The invention further relates to a method for moving a boom of a mining vehicle. The objects of the invention are further defined in the preambles of the independent claims of the application.

Rock drilling employs rock drilling equipment in which the drill boom can be rotated in the roof area in front of the rock drilling machine to move the drilling unit to the drill hole. Coverage is a sector that also extends to the sides of a rock drilling rig. In mining vehicles, it is not usually necessary to reverse the boom 15. Therefore, it is generally unnecessary to use so-called "dummies". rotating platforms. However, the base of the rock drilling device may comprise a lower frame and an upper frame on top thereof which can be pivoted at a limited angle of rotation with respect to the lower frame. The boom rigidly attached to the top frame laterally is then moved by turning the top frame. If the angle of rotation of the roof area is to be large in such a construction, the upper frame must be rotated by a large angle of rotation with respect to the lower frame, as a result of which the center of gravity of the device may change and high transverse forces may be exerted. At high turning angles, the stability of the device may thus be impaired. When operating on uneven surfaces, even the device 25 may be at risk of tipping over. So the maximum swinging angle of the top frame has to be limited,

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^ which of course limits the size of the coverage area. This makes it difficult to drill holes to the side of the rock drilling device.

BRIEF DESCRIPTION OF THE INVENTION The object of the present invention is to provide a novel and

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30 improved rock drilling device and method for moving the boom.

g The rock drilling device according to the invention is characterized by

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g that the boom is connected to the upper frame by means of a second vertical pivot axis; ° that the first pivot axis and the second pivot axis are arranged in the same axis; that the boom has a second pivoting means for pivoting the boom 35 in a transverse direction of a predetermined second second pivot angle 2 relative to the top frame; and that the first pivot angle and the second pivot angle together define the maximum transverse pivot angle of the boom.

The method according to the invention is characterized by further rotating the boom with respect to the upper body supported by a second pivot axis, whereby the boom pivots within a limited second pivot angle, performing said pivots with coaxially aligned pivot axes, and displacing the boom the boom in relation to the upper frame, in a position defined by another angle of rotation.

The idea of the invention is that the lateral pivot of the boom is done by pivoting the top frame of the base with respect to the lower body and pivoting the boom with respect to the top body. The maximum swing angle of the boom cover area is thus determined by the sum of the first swing angle between the upper frame and the lower frame and the second swing angle between the boom and the upper frame.

An advantage of the invention is that the swinging angle of the boom can be greater than before without reducing the stability of the device. Because the transverse positions of the boom are achieved with a smaller pivot angle of the top frame, the use of a rock drilling device is also easier in narrow operating areas such as tunnels 20 and in the vicinity of obstacles. This avoids collisions with the top frame and the resulting damage to equipment.

The idea of one embodiment is to roughen the boom first by rotating the top frame relative to the bottom frame. When roughing, the operator takes note of the obstacles on the sides of the rock drilling rig and ensures that the upper frame does not collide with them. Subsequently, fine positioning is performed by rotating the boom relative to the top frame. Since the superstructure is considered to be stationary o during fine parking, there is no need for the operator during fine parking

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^ Supervise upper body movements. The fine parking coverage area is dimensioned sufficiently large so that the drilling unit can drill several designed drill holes without turning the upper frame. Subtle parking positions can be more accurate and faster than coarse positioning because of fine positioning ^. It rotates the boom and not the entire upper body relative to the boom

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° large and massive construction.

In one embodiment, the idea is to have a maximum boom swing angle of 180 °, whereby the boom can be pivoted on either side of the rock drilling device perpendicular to the centerline of the lower frame. The drilling unit can then be positioned in a versatile manner with the boom in the driving direction of the rock drilling device and at the side drilling positions.

The idea of one embodiment is that the pivoting angle of the upper body relative to the center axis of the lower body is 60 ° or less in each of the pivoting directions, i.e. the first pivoting angle is at most 120 °. Limiting the first pivot angle can ensure the stability of the substrate. Further, the pivot angle of the boom relative to the top frame, i.e. the second pivot angle, is at least 60 °.

The idea of one embodiment is that the upper 10 pivot angle 10 with respect to the lower pivot center axis is 45 ° in each direction of rotation, i.e. the first pivot angle is 90 °. Further, the maximum swinging angle of the boom with respect to the top frame is 90 °. The boom swing angle is then 180 °.

The idea of one embodiment is that the first pivoting device and the second pivoting device are pressure medium cylinders such as hydraulic cylinders. The linear motion produced by the pressure medium cylinders is converted by means of articulations into the turning movement of the upper body and the turning movement of the boom respectively. Pressurized medium cylinders are inexpensive and functionally reliable when compared to various rotary motors. In addition, the use of cylinders avoids the use of expensive swivel frames and transmissions.

The idea of one embodiment is that the rock drilling device comprises a cab adapted to turn simultaneously with the boom relative to the top frame. The cab and boom may be arranged on the same attachment coupled to pivot relative to the second pivot axis. As the cab turns with the boom, the operator has a constant good visibility to the target. In addition, operator ergonomics are better.

5 The idea of an embodiment is that the first

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The axis of rotation and the other axis of rotation are separate axes. In this case, the positions of the axes can be freely selected at suitable locations, taking into account the layout of the substrate.

The idea of an embodiment is that the first inverse | the working axis and the second pivot axis are arranged in the same axis.

The idea of one embodiment is that the first pivot axis and the second pivot axis are formed by one continuous main axis. The main shaft is supported on the lower frame. The top frame and boom attachment are pivoted ^ 35! to the main axis, whereby they are arranged to pivot with respect to one common axis. This application enables a simple and robust construction.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the invention are explained in more detail in the accompanying drawings, in which Fig. 1 schematically and side view of a prior art rock drilling device; and Fig. 4 is a schematic and top plan view of the rock drilling device according to the invention, Figs. 5 and 6 are schematic and top views of the rocker side of the device 7 and schematically and from above, the pivoting positions of the boom of a rock drilling device according to the invention on the left-hand side, Fig. 9 schematically and r Fig. 10 is a schematic and top plan view of a mining vehicle according to the invention.

Some embodiments of the invention are illustrated in the figures

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^ for simplicity. Like parts are denoted by like reference numerals in the figures.

DETAILED DESCRIPTION OF THE INVENTION g Figure 1 shows a rock drilling device 1 comprising a movable base 2. The base 2 comprises a lower body 3 and an upper body 4. The lower body 3 may g comprise two rollers 5 connected to one another by a lower body 3.

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g using the first body 6. In the case of the tracks 5, there are necessary transmission means for transmitting the driving force to the tracks. The upper body 4 may comprise a motor 7, a hydraulic pump 8, a compressor 9, a dust collection system 35 and associated filters 10, as well as auxiliary equipment required for drilling the sand. Further, the upper body 4 may comprise a cab 11, a drilling plane or the like for the operator. The rock drilling device control unit 12 may also be mounted on the top frame 4. The rock drilling device 1 may be provided with a boom 13 fitted with a drilling unit 14 comprising a feed beam 15, a rock drill 5, and a feed 17 for moving the rock drill. The rock drill 16 comprises a percussion device for imparting impact pulses to the tool and a rotation device for rotating the tool with respect to its longitudinal axis.

The boom 13 is connected to the upper frame 4 by a horizontal joint 18 10, whereby the boom 13 can be raised and lowered vertically, for example by means of a hydraulic cylinder 19. Further, the upper body 4 is pivotally arranged with respect to the lower body 3. By means of the first pivoting device 20, the upper frame 4 can be pivoted sideways with respect to the first vertical pivot axis 21 on the front side of the rock drilling device 1, i.e. the driving direction A. The drill core 15 is positioned at the drill hole 22 by rotating the upper body 4 relative to the pivot axis 21 and raising and lowering the boom 13 relative to the horizontal joint 18. In the prior art solution shown in Fig. 1, the boom 13 can be rotated in the transverse direction relative to the driving direction A of the rock drilling device 1 only by turning the top frame 4. Figure 2 shows that when the boom 13 is turned transversely to the driving direction A, the upper body 4, which is located on the opposite side of the boom 13, is displaced transversely, respectively. When the massive top frame 4 is rotated to its extreme position, the center of gravity position of the device changes. The upper body 4 then exerts great transverse forces on the lower body 3 and there is a risk that the skull drilling device 1 will tip over, particularly when operating on an uneven or inclined surface. Further, it will be seen that the upper body 4 extends to its extreme position in its pivoted position at a large o lateral distance from the centerline, whereby the pivoting

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^ the country requires a lot of free space on the side of the device.

The embodiments shown below may comprise the rock drilling devices shown in Fig. 1, although not shown in Figs. 3-10 for clarity.

In Fig. 3, the upper body 4 is parallel to the central axis C of the lower body 3 and

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g boom 13 is rotated from the central axis C to the right side o of the rock drilling device 1. The boom 13 is secured to a securing member 23 which is pivotally supported by a second vertical pivot axis 24. The securing member 23 may include a bracket to which a second pivoting device 26, which may be a fluid medium cylinder, preferably a hydraulic cylinder, is secured. The pivoting device 26 is supported by a second pivot 27 at the attachment point 28 in the upper body 4. The second pivoting device 26 is used to form a linear motion which is converted by the attachment piece 23 into a pivoting motion. The boom 13 is attached by means of a horizontal 5-pivot 18 to the fastening piece 23. Further, the cab 11 may be fastened by the supporting member 29 to the fastening piece 23. When the pivoting device 26 is moved in a linear direction L, the fastening piece 23 pivots about the the coupled boom 13 and the cab 11. The movement of the cylinder 10 acting as the second pivoting device 26 is limited, so that in practice it can provide only a limited pivot angle for the mounting member 23. The turning angle can be 60 ° to 120 °.

Figure 4, in turn, shows means for pivoting the upper body 4 with respect to the lower body 3. The lower body 3 may comprise tracks 5 which are connected to one another by a transverse body part 6. Typically, the body portion 6 is disposed relative to the track members 5 so that about one third of the length of the track members 5 is on the rear side and two thirds is on the front side thereof. The upper frame 4 is disposed mainly on the rear side of the frame part 6 and the boom 13 is completely on the front side of the frame part 6. By positioning the body member 6 in this manner relative to the rollers 5 and arranging the body member on opposite sides of the upper body 6 and boom 13, a good balance is sought. The body part 6 is provided with a vertical first pivot axis 21 on which the upper body 4 is pivotally mounted. The first pivoting device 20 may be a pressure medium cylinder, preferably a hydraulic cylinder, which is fixed by a joint 30 to the attachment point 31 in the body part 6 and attached by means of a joint 32 to the attachment point 33 in the upper body 4. which causes the upper body 4 to pivot in the first pivot axis-

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^ To 21. The travel of the cylinder acting as the first pivoting device 20 is limited, so that the upper body 4 also has a limited pivot angle.

The pivot axes 21 and 24 shown in Figures 3 and 4 may be separate | axes disposed co-axially, or alternatively they may be part of one continuous main axis 34 as shown later in Figure 9.

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Figures 5 and 6 show that the upper frame 4 can be pivoted by an angle E1 to the left side of the center axis C of the bottom frame 3 and by a pivot angle E2 to the right side of the center axis C respectively. The angles of rotation E1 and E2 can be, for example, 60 °, whereby the sum of the turning angles K1 of the upper body 4 is 120 °. Further, the boom 13 has an angle of rotation K2 with respect to the upper body 4, whereby the boom 13 can be pivoted between the extreme positions shown in Figures 5 and 6. The turning angles K1 and K2 can be selected such that the boom 13 can be pivoted perpendicularly to the line D relative to the centerline 5C of the lower body 3. The boom 13 can then be moved in a versatile manner to the positions ahead of the transverse line D.

In Figures 7 and 8, the upper frame 4 is pivoted to its extreme position on the right side of the rock drilling device 1. By turning the boom 13 to its extreme position shown in Fig. 7, the boom 13 is pointed perpendicular to the left side of the rock removal device 1. On the other hand, the boom 13 can be pivoted by an angle of rotation K2 toward the center line C at its other extreme position, as shown in Fig. 8.

Fig. 9 shows an embodiment in which the frame part 6 of the lower frame 3 is provided with a main vertical axis 34 to which both the upper frame 4 and the boom attachment piece 23 are pivotally mounted. Hereby, one unified and supporting main shaft 34 acts simultaneously as a first pivot axis 21 and a second pivot axis 24. This embodiment greatly simplifies the construction.

Fig. 10 shows an embodiment in which the first pivot axis 20 21 and the second pivot axis 24 are separate axes spaced apart. In this case, the position of the pivot axes 21, 24 can be selected according to another structure of the device.

Instead of the rollers, the rock drilling device may be provided with wheels or similar motors suitable for mining and allowing the device to move independently at the site of operation.

In addition to the rock drilling device, the invention and its embodiments described above can also be utilized in other boom mining vehicles.

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^ in translation. The boom of the mining vehicle may be provided, for example, with a breaking hammer, which can break the stone by applying impact pulses to the breaking tool by means of a percussion device. Further, the boom of the mining vehicle may be provided, for example, with a bolting device, a loading device, means for supplying a sealant, or other mining actuator.

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g In addition, the top frame may be adapted to pivot with respect to the bottom frame 00 ° so that the boom can be pivoted from the direction of travel to the side and further at least a portion of ^ 35 to the rear. In this case, the angle of rotation of the upper body may be between 180 and 360 °.

It is also possible to arrange the upper frame rotatably relative to the lower frame.

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Also in these solutions, the boom is connected to the upper frame by means of a second vertical pivot axis. In this case, the rough transverse movement of the boom can be done by turning the top frame and precise fine positioning by turning the boom alone. When operating in confined areas, the top frame can be positioned with respect to available space and then held in place to avoid collisions. Positioning the boom and the mining actuator thereon at the operating position can be accomplished by rotating the boom about its vertical joint.

In some cases, the features set forth 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 various combinations.

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

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Claims (8)

A rock drilling device comprising: a movable platform (2) comprising a lower frame (3) and an upper frame (4), wherein the lower frame (3) comprises movable members (5) for moving the platform (2) forward in the driving direction (A), and the lower body (3) having a central axis (C); at least one boom (13) coupled to the upper frame (4) and pivotable with respect to a horizontal joint (18) for raising and lowering the boom (13), and further each boom (13) pivotable in a transverse direction to the center axis (C) of the lower body; 10 vertical first pivot axes (21) between the lower body (3) and the upper body (4); at least one first pivoting device (20) arranged to pivot the upper body (4) by a first first pivot angle (K1) limited to the first pivot axis (21) for pivoting the boom (13); and at least one drilling unit (14) mounted on the boom (13), the drilling unit (14) comprising a feed beam (15) and a movably mounted rock drilling machine (16); characterized in that the boom (13) is connected to the upper frame (4) by a second vertical pivot axis (24); that the first pivot axis (21) and the second pivot axis (24) are arranged in the same axis; that the boom (13) has a second pivoting device (26) for pivoting the boom (13) 25 in a transverse direction by a predetermined limited second pivot angle (K2) relative to the top frame (4); and o that the first pivot angle (K1) and the second pivot angle (K2) ιό together define the transverse maximum pivot angle Z (K) of the boom (13). ° 30 Rock drilling device according to claim 1, characterized in that the first pivoting device (20) and the second pivoting device (26) are S pressure medium cylinders. 00 Rock drilling device according to claim 1 or 2, characterized in that the first pivot axis (21) and the second pivot axis (24) are formed by a single continuous main axis (34) supported on the lower frame. (3) and with respect to which the upper body (4) and the boom (13) are arranged to pivot. Rock drilling device according to one of the preceding claims, characterized in that the rock drilling device (1) comprises a cab (11); and that the cab (11) and the boom (13) are connected to each other, the cab (11) being adapted to pivot simultaneously with the boom (13) with respect to the second pivot axis (24). Rock drilling device according to one of the preceding claims, characterized in that the transverse pivot angle (K) of the boom (13) is at least 180 °. Rock drilling device according to claim 5, characterized in that the first pivot angle (K1) is 120 ° or less; and that the second angle of rotation (K 2) is 60 ° or greater. A method for pivoting a boom of a mining vehicle, the mining vehicle (1) comprising a movable platform (2) comprising a lower frame (3) and a top frame (4), wherein at least one boom (13) is mounted on the top frame (4); and wherein a first pivot axis (21) is provided between the lower body (3) and the upper body (4); and wherein the upper body (4) is pivoted within a region of a first pivot angle (K1) limited to the lower body (3) to move the boom (13) in the transverse direction; characterized in that CM0 is further rotated in a transverse direction with respect to the relative rotation axis (24) of the upper frame (4) of the boom (13), whereby the boom (13) rotates within a limited ° second angle of rotation (K2); with pivoting axes | shafts (21, 24), and is. moving the boom (13) to its transverse extreme position by rotating the upper frame (4) 00 ° to the extreme position defined by the first pivot angle (K1); and o rotating the boom (13) relative to the upper pivot (4) Method according to Claim 7, characterized in that the boom (13) is roughly positioned by rotating the upper frame (4) with respect to the lower frame (3) in the region of the first pivot angle (K1); and 5, keeping the upper frame (4) substantially stationary and fine positioning the boom (13) by rotating the boom (13) relative to the upper frame (4) in the region of the second pivot angle (K2). (M δ {M tn o i oo o X en CL h- · 00 00 in oo o o {M