• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an impact mechanism comprising a housing (32) with at least two stroke adjustment channels (18, 19, 20); an adjustment arrangement (31) with at least two adjustment pin channels (35, 36, 37, 135, 136, 137) arranged to interact in a manner that can be selected with the stroke adjustment channels (18, 19, 20); and a hammer piston (1) that performs reciprocating motion in the housing (32) in order to impact repetitively onto an anvil (2), which hammer piston (1) has a stroke length that can be selected with the aid of adjustment pin channels (35, 36, 37, 135, 136, 137) and the stroke adjustment channels (18, 19, 20). According to the invention, the adjustment arrangement (31) comprises an elastic element (48) arranged to maintain the adjustment arrangement (31) in place for the stroke length that has been selected; and an operating means (34) arranged to select adjustment pin channel (35, 36, 37, 135, 136, 137) and thus the stroke length of the hammer piston (1).
    公开号:SE1150365A1
    申请号:SE1150365
    申请日:2011-04-27
    公开日:2012-10-28
    发明作者:Ulf Nilsson
    申请人:Atlas Copco Rock Drills Ab；
    IPC主号:
    专利说明:

    15 20 25 2 is selected by loosening a nut, turning the pin and screwing the nut back on.
    The downside is that tools are needed to change the stroke.
    Different variants of more or less automatic adjustment of stroke are shown in e.g. EPO 080 446, EPO 112 810, WO2007 / 097677 and WO2008 / 033075. They work well, but are also complicated and therefore expensive.
    DESCRIPTION OF THE INVENTION The object of solving the stroke change in prior art. This object is achieved according to the invention the present invention is that problem by the features of claim 1.
    The advantages are that the stroke can be changed by hand, with one hand, in a fast, easy and cheap way, without the need for tools or complicated constructions.
    DESCRIPTION OF FIGURES The invention will now be explained in more detail with the aid of a preferred exemplary embodiment and with reference to the accompanying drawings, in which Figs. 1a-d show an overview of how a percussion instrument works and how a change in stroke length can take place.
    Figs. 2a-c and 3a-c show in cross-sections, overview view and side views a first embodiment. In Fig. 4a-c a second embodiment is shown in overview view and side views. In Figs. 5a-c and 6a-c are shown in cross-sections, overview view and side view a third embodiment Figs. 7a-c and 8a-c show in cross-sections, overview view and side view a fourth embodiment PREFERRED EMBODIMENT Fig. 1a-d schematically shows a known hydraulic top hammer rock drilling machine with a percussion type of alternating pressure, arranged in a housing . The percussion device comprises a percussion piston 1 which reciprocates and strikes a neck adapter 2 10 15 20 25 30 3 or the like. The neck adapter 2 then transmits the impact energy via a drill string (not shown) and a drill bit (not shown) to the rock.
    The front end 3 of the percussion piston is referred to herein as the end which strikes the neck adapter 2, while the rear end 4 of the percussion piston is the end directed from the neck adapter 2. In this example the percussion piston 1 comprises a front piston boom 5 with a front drive area 6, and a rear piston boom 7 with a rear drive area 8.
    The movement back and forth is controlled by means of a valve piston 9 and a number of channels. An intake accumulator 25 and a return accumulator 24 equalize pressure peaks during the process.
    In Fig. 1a, the valve piston 9 is in its first position. A forward signal channel 10 is open from high pressure 11, via the valve piston 9, to the rear drive area of the percussion piston 8. A reverse signal channel the valve piston 9 to low pressure 23. 14 is open from the front drive area 6 of the percussion piston, via This gives a pressure on the rear drive area 8, but not on the front drive area 6 of the percussion piston, which forces the percussion piston 1 to move forward towards the neck adapter 2. The rear piston boom 7 blocks a passage to a first changeover channel 12, which later will trigger reversal of the movement of the piston.
    In Fig. 1b, the percussion piston 1 continues to move forward. When the percussion piston 1 gets closer to the neck adapter 2, the rear piston boom 7 no longer blocks the passage to the first changeover channel 12. This causes the first changeover area 13 of the valve piston to be pressurized, which forces the valve piston 9 to move to its second position.
    In Fig. 1c, the valve piston 9 fl has moved to its second position. Thus, the reverse signal duct 14 is opened instead from high pressure 11, via the valve piston 9, to from pressure 11 to the forward signal duct 10 is closed, so that the rear drive area 8 of the percussion piston is no longer the front drive area 6 of the percussion piston, but is connected to low pressure 23 via the valve piston 9. This pressure change changes the direction of movement of the percussion piston 1, so that the percussion piston 1 is instead forced backwards. 20 25 30 4 In Fig. 1d the percussion piston 1 moves backwards. An adjustment device in the form of a it is possible to adjust the length of the stroke.
    The switching pin 15 in this example has a first switching pin channel switching pin 15 (not shown), a second switching pin channel 16 and one (not housed basic switching channel 17, a first signal switching channel 18, a second third signal switching channel 20).
    The basic changeover channel 17 is connected via a second changeover channel (third changeover pin channel shown). There is a filter channel 19 and a 21 with the second piston area 22 of the valve piston.
    If the changeover pin 15 is set in a first position, the first changeover pin channel connects the basic changeover channel 17 to the first beat changeover channel 18. If the changeover pin 15 is set in a second position, the basis changeover changeover channel 17 connects to the second beat changeover channel 19.
    If the changeover pin 15 is set in a third position, the third changeover pin channel connects the basic stroke changeover channel 17 with the third beat changeover channel 20. the second changeover pin channel 16 In Fig. 1d, the changeover pin 15 is set in its second position. When the percussion piston 1 during its rearward movement opens the first percussion changeover channel 18 against pressure 11, nothing happens, since the first percussion changeover channel 18 in this position is not connected to the basic stroke changeover channel 17.
    On the other hand, when the percussion piston 1 has moved a little further back, the second percussion adjustment channel 19 is opened against pressure. The second changeover pin channel 16 connects the basic stroke changeover channel 17 to the second stroke changeover channel 19 and thus to the second changeover channel 21 and the second changeover area 22 of the valve. This causes the second changeover area 22 of the valve piston to be pressurized, forcing the valve piston 9 to move to its first position. The passage to the reverse signal channel 14 is closed, so that the front drive area 6 of the percussion piston is no longer pressurized. Thus, the percussion piston 1 is forced to turn and move forward again, and the percussion cycle begins again according to Fig. 1a. If instead the changeover pin 16 had been set in its first position, the second change-over area 22 of the valve piston would have been pressurized already when the percussion piston 1 passed the first percussion changeover channel 18. The percussion piston 1 had thus turned earlier. Correspondingly, if the changeover pin 16 had been set in its third position, the second changeover area 22 of the valve piston would not have been pressurized until the percussion piston 1 passed the third stroke changeover channel 20. The percussion piston 1 had thus turned later. In this way, the stroke length of the percussion piston 1 can be selected and with it strokes with different energy and frequency are obtained.
    The changeover pin 15 in Figs. 1a-d is adjusted as in the Atlas Copco manual above, in that the changeover pin 15 has fl your changeover pin channels which can be selected by rotation by first unscrewing a nut, then turning the changeover pin to another position and screwing the nut back on. Another alternative is to unscrew the changeover pin 15 and replace it with another type with a different changeover pin channel. Both options require a tool and are therefore cumbersome.
    The following figures show according to the invention a solution which can be used e.g. in a percussion of the alternating pressure type according to the above or similar instead of the adjustment pin 15 shown in the figures. The invention can also be used in percussion of the constant pressure type or other possible percussion instruments where the stroke length needs to be adjusted. It is immaterial if the percussion piston strikes a neck adapter as above or directly on the drill bit or drill string, alternatively on a chisel or the like. All this can be considered as variants of cleaning to turn on.
    Figs. 2a-c and 3a-c show a switching device in the form of a switching pin 31 or the like, mounted in a housing 32 in a percussion instrument. Fig. 3a shows only the adjustment pin 31. Fig. 3c shows only the housing 32, seen from the side. Fig. 2a-c and Fig. 3b show the housing 32 with the adjustment pin 31 mounted.
    The adjusting pin has one The adjusting pin 31 has a first groove 35, a second groove 36 and a third groove 37. These grooves may preferably be longitudinally milled along the inner end 33 and an outer end 34, the shaft 38 of the adjusting pin and are separated from each other. The grooves 35, 36, 37 have the function of the changeover pin channels described above and can, as described above, be used to connect a basic stroke changeover channel 17 in the housing to a first stroke changeover channel 18, a second stroke changeover channel 19 or a third stroke changeover channel 20, respectively. thus it is possible to select the changeover pin channel and thus the stroke changeover channel by means of rotation.
    These changeover pin channels 35, 36, 37 and stroke changeover channels 18, 19, 20 can be designed in different ways; number of channels and their appearance are not relevant, as long as a similar function is performed. In particular, the number of channels can be as advantageous as two or four or three.
    On the adjusting pin 31 there is preferably a fastening device 43 in the form of a pin 43 or the like which here is egg-shaped, but which may have a different appearance. The pin 43 fits in a fastening device 44, 45, 46 in the housing in the form of three recesses 44, 45, 46. By choosing which recess 44, 45, 46 the pin is fitted in, the amount of twisted adjustment pin 31 is also selected and thus also which changeover pin channel 35, 36, 37 and in the long run which stroke changeover channel 18, 19, 20 is to be selected. Thus, the stroke length is selected; compare the description above.
    For higher strength, the adjusting pin 31 can have two or three pins 43a, 43b, 43c arranged circularly around the adjusting pin 31, so that they can abut in their sockets 44, 45, 46 at the same time, see examples in Figs. 4a-c.
    Alternatively, on the contrary, the pin or pins can be arranged in the housing 32, while the recesses are arranged in the adjusting pin 31. Other fastening devices are also conceivable without changing the function.
    The adjustment pin 31 can be mounted fixedly in the housing e.g. by means of a nut 49 with a hole 50 through which the outer end 34 of the adjusting pin can pass.
    On the adjusting pin 31 there is an end or the like 47 and an elastic element in the form of a spring 48 or the like which, in a clamped position, abuts with one end 51 against the flange 47 and with its other end 52 against the nut 10 15 20 25 7 49 or other part of the housing 32. The nut 49 or other parts attached to the housing 32 may in this context be counted as part of the housing 32.
    Because the adjusting pin 31 is spring-loaded axially in this way, the pin 43 is held in place in the selected recess 44, 45, 46, which ensures that the adjusting pin channels 35, 36, 37 are held in place and function as they should.
    Another alternative is that the shaft 47 itself is shaped as three pins which are wide enough for the spring 48 to also be able to rest on them.
    To change the adjustment pin channel 35, 36, 37 and thus the stroke, the operator pulls on the outer end 34 or other corresponding actuator 34 of the adjustment pin and thereby compresses the spring 48. The operator pulls until the pin 43 detaches from the recess 44, 45, 46. The adjustment pin 31 moves now to turn and can be fitted into another recess 44, 45, 46. When the operator releases the outer end 34 of the adjusting pin, the spring force will cause the adjusting pin to return to its position, while the pin 43 is held in a new recess 44, 45, 46 .
    The outer end 34 of the adjusting pin may be provided with a pin or the like 53 to facilitate grasping of the adjusting pin 31 and / or to indicate which of the three positions the adjusting pin 31 is set against markings 55, 56, 57 in the housing.
    Figs. 5a-c and 6a-b show an embodiment where the spring 48 is arranged so that the outer end 34 is pressed in instead of being pulled out when changing the adjusting pin channel 35, 36, 37, the spring 48 being compressed to loosen the pin 43 from the recess 44.
    Fig. 6b also shows in section how the changeover pin channels 35, 36, 37 are separated from each other. Also other variants of elastic elements 48 are conceivable, such as e.g. pulled apart instead of compressed. This applies to all embodiments. Figs. 7a-c and 8a-b show a further embodiment. In the previously described embodiments, it is necessary that the percussion instrument is not in operation in order for the stroke length to be able to be changed. The adjusting pin channels 35, 36, 37 there comprise grooves or the like which were separated from each other.
    In contrast, Figs. 7a-c and 8a-b show three changeover pin channels 135, 136, 137 which go into each other. This means that no matter how the changeover pin 31 is rotated, a connection will always be formed between the basic stroke changeover channel 17 and one of the stroke changeover channels 18, 19, 20, which in turn means that the percussion can go regardless of how the changeover pin 31 is turned.
    In Figs. 7a-c and 8a-b, the fastening devices 43 and 44 are detached from each other by pulling out the outer end 34. In order for a connection between the basic stroke changeover channel 17 and one of the stroke changeover channels 18, 19, 20 to be maintained even when the outer end 34 is pulled out, the changeover pin channels 135, 136, 137 in the embodiment in Figs. 7a-c and 8a-b are longer than in the previous embodiments.
    The same applies, of course, if the embodiment in Figs. 5a-c and 6a-b is correspondingly designed with adjusting pin channels which go into each other, the extension of the adjustment pin channels of course having to be done in the other direction, to enable stroke change by pressing in the outer end 34 instead. .
    The invention is of course not limited to the example described above, but can be modified within the scope of the appended claims.
    权利要求:
    Claims (1)
    [1]
    1) Percussion claims 1) Percussion device comprising a housing (32) with at least two percussion changeover channels (18, 19, 20); a (31) changeover pin channels (35, 36, 37, 135, 136, 137) arranged for selectable changeover device with at least two co-operations with the stroke changeover channels (18, 19, 20); and a percussion piston (1) which is reciprocally movable in the housing (32) for repetitively striking an anvil (2), which percussion piston (1) has a stroke length which is selectable by means of (35, 36, 37, 135, 136, 137) and (18, 19, 20), characterized in that the changeover device (31) comprises an elastic element (48) arranged the changeover pin channels the stroke changeover channels to hold the changeover device (31) in place for the stroke which is (34) to 135 , and thus arranged 136, 137) selected; and an actuator (35, 36, 37, selecting the stroke of the adjusting pin channel of the percussion piston (1). Percussion device according to claim 1, characterized in that the actuating means (34) is an outer end (34) of the adjusting device (31). that the actuating means (34) is arranged selecting the changeover pin channel (35, Percussion device according to claim 1 or 2, characterized by 36, 37, 135, 136, 137) by rotating the actuator (34) Percussion device according to any one of claims 1-3, characterized in that the changeover device (31) comprises a fastening device (43) arranged to fit into a corresponding fastening device (44, 45, 46) in the housing (32) in such a way that the fastening device (43) of the switching device and the fastening device (44, 45, 46) of the housing fit together at least two different ways and so that the adjusting pin channel (35, 36, 37, 135, 136, 137) is selected depending on how (44, 45, 46) the fastening device (43) is assembled.the fastening device of the housing and the fastening device of the changing device (43) comprises at least one pin (43) Percussion device according to claim 4, characterized by 10) Percussion device according to any one of claims 10 and that the housing fastening device (44, 45, 46) comprises at least one recess (44, 45, 46). Percussion device according to Claim 4, characterized in that the fastening device (43) of the adjusting device comprises at least one recess (43) and in that the fastening device (44, 45, 46) of the housing comprises at least one pin (44, 45, 46). Percussion device according to one of Claims 4 to 6, characterized in that the actuating means (34) is arranged to release the actuating means (34) of the switching device (43) (44, 45, 46) from the housing (32). fastening device from the fastening device of the housing when Percussion device according to any one of claims 4-6, characterized in that the operating means (34) is arranged to release the operating means (34) of the switching device (43) (44, 45, 46) into the housing (32). fastening device from the fastening device of the housing when Percussion device according to one of Claims 1 to 8, characterized in that the adjusting pin channels (35, 36, 37) are arranged separated from one another. 1-8, characterized in that (135, 136, 137) are the changeover pin channels (135, 136, 137) go into each other. the adjustment pin channels arranged so that 11) Percussion device according to one of Claims 1 to 10, characterized in that the anvil (2) is something from the group of neck adapter, drill string, drill bit, chisel. A rock drilling machine comprising a percussion device according to any one of claims 1-11. A drilling rig comprising a rock drilling machine according to claim 12.
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    US4006783A|1975-03-17|1977-02-08|Linden-Alimak Ab|Hydraulic operated rock drilling apparatus|
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    SE420057B|1980-02-20|1981-09-14|Atlas Copco Ab|HYDRAULIC SHIPPING WITH POSSIBILITY TO REGULATE SHOCK ENERGY|
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    SE8106907L|1981-11-20|1983-05-21|Atlas Copco Ab|WAY TO CONTROL A PERFORMANCE AND PERFORMANCE|
    SE8207405L|1982-12-27|1984-06-28|Atlas Copco Ab|MOUNTAIN DRILLING AND METHOD OF OPTIMIZING MOUNTAIN DRILLING|
    SU1313973A1|1984-06-20|1987-05-30|Институт Горного Дела Со Ан Ссср|Pneumatic reversible percussive device for driving holes in earth|
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    SE528743C2|2005-06-22|2007-02-06|Atlas Copco Rock Drills Ab|Percussion for rock drill, procedure for effecting a reciprocating piston movement and rock drill|
    SE529615C2|2006-02-20|2007-10-09|Atlas Copco Rock Drills Ab|Percussion and rock drill and method for controlling the stroke of the piston|
    SE530524C2|2006-09-13|2008-07-01|Atlas Copco Rock Drills Ab|Percussion, rock drilling machine including such percussion and method for controlling percussion|
    SE530781C2|2007-01-11|2008-09-09|Atlas Copco Rock Drills Ab|Rock drilling equipment and method associated with this|CN105275384B|2014-06-26|2018-03-09|中国石油化工股份有限公司|A kind of percussion drilling device|
    CN104154050B|2014-07-29|2016-04-27|李田生|Efficient hydraulic rock drill|
    FR3077753B1|2018-02-14|2020-01-31|Montabert|METHOD FOR ADJUSTING THE STRIKING STROKE OF A STRIKING PISTON OF A PERCUSSION APPARATUS, AND A PERCUSSION APPARATUS FOR CARRYING OUT SAID METHOD|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1150365A|SE535801C2|2011-04-27|2011-04-27|Percussion, rock drill and drill rig|SE1150365A| SE535801C2|2011-04-27|2011-04-27|Percussion, rock drill and drill rig|
    PCT/SE2012/050428| WO2012148347A1|2011-04-27|2012-04-24|An impact mechanism, rock drill and drill rig comprising such impact mechanism|
    EP12777321.6A| EP2701880B1|2011-04-27|2012-04-24|An impact mechanism, rock drill and drill rig comprising such impact mechanism|
    CA2834155A| CA2834155C|2011-04-27|2012-04-24|An impact mechanism, rock drill and drill rig comprising such impact mechanism|
    AU2012249219A| AU2012249219B2|2011-04-27|2012-04-24|An impact mechanism, rock drill and drill rig comprising such impact mechanism|
    CN201280020103.3A| CN103492131B|2011-04-27|2012-04-24|Beater mechanism and comprise rock drill and the rig of this beater mechanism|
    US13/261,736| US9511489B2|2011-04-27|2012-04-24|Impact mechanism, rock drill and drill rig comprising such impact mechanism|
    JP2014508316A| JP6191084B2|2011-04-27|2012-04-24|Impact mechanism and rock drill and drill rig equipped with the impact mechanism|
    ES12777321.6T| ES2639543T3|2011-04-27|2012-04-24|An impact mechanism, rock drill and drilling rig comprising such an impact mechanism|
    ZA2013/07186A| ZA201307186B|2011-04-27|2013-09-25|An impact mechanism, rock drill rig comprising such impact mechanism|
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