• 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 aims to improve the power/weight ratio of a two-stroke engine employed as the prime mover in a drilling and chiselling hammer 1 (sometimes also known as a percussion tool) of the kind in which percussion impacts are transmitted to a tool holder 3 of the tool by way of a percussion piston 9 which is reciprocated by the engine, thereby to enable the tool to be lighter, so that it can more readily be manipulated in the case of a hand-held tool. To achieve this improved efficiency, crank 7 of the percussion piston 9 is accommodated in a chamber 1a into which air is drawn by way of a non- return valve 11 upon movement of the piston 9 towards the top dead-centre position and from which air is displaced, under compression, through a pipeline 13 to an entry slot 1e of the cylinder 1c of the engine. <IMAGE>
    公开号:SU1071233A3
    申请号:SU792796857
    申请日:1979-08-06
    公开日:1984-01-30
    发明作者:Глоор Петер
    申请人:Хилти А.Г. (Фирма)；
    IPC主号:
    专利说明:

    2, the drill hammer according to claim 1, characterized in that in the radial plane of the shaft, the crank of the drive piston relative to the crank of the engine piston is rotated by an angle of 10 - the direction opposite to the rotation of the crankshaft,
    i
    The invention relates to the mining industry, in particular to percussion devices with an internal combustion engine, used for drilling holes in rocks.
    A percussion hammer drill is known, comprising a housing, an internal combustion engine with a crankshaft for communicating a reciprocating motion to a drive piston, a gearbox and a flywheel of a crankshaft 1.
    The disadvantages of a drill hammer are the relative complexity of the design due to the presence of a gearbox and a flywheel and a sufficiently large degree of pollution of the atmosphere with exhaust gases.
    Closest to the hammer drill of percussive action proposed by the technical essence and the achieved result, comprising a housing, an internal combustion engine with a combustion chamber and a crankshaft with a connecting rod for communicating reciprocating movement to the driving piston, as well as the cranking shaft of the driving piston and the crank poran of engine 2,
    A disadvantage of the known hammer drill is that its efficiency is relatively low due to losses in the combustion chamber with the incoming mixture. In addition, as a result of incomplete combustion of the mixture and leaching of the lubricant mixture with the mixture, the atmosphere is polluted with exhaust gases and the engine lubrication conditions deteriorate.
    The purpose of the invention is to increase the efficiency and improvement of lubrication conditions while reducing the degree of pollution of the atmosphere by exhaust gases,
    The goal is achieved by the fact that in a hammer drill of a percussion action, including a housing, an internal combustion engine with a combustion chamber and a crankshaft with a connecting rod for communicating reciprocating movement to a driving piston and a piston crank chamber and an engine piston crankshaft, a crank cam drive chamber, a crank drive crank chamber, an actuator crank chamber, a crank drive crank chamber, a crank drive cam block, a crank drive crank chamber, and a crank drive crank chamber, a crank drive cam block, a crank drive crank chamber, and a crank drive crank chamber, a crank drive cam chamber, a crank drive crank chamber, a crank drive crank chamber, and a crank drive crank chamber. equipped with inlet valve ji isolated from crank chamber
    engine piston, and in the crank chamber of the drive piston an outlet is made, through which the chamber of the drive piston n is connected to the combustion chamber of the engine.
    In addition, in the radial plane of the shaft, the crank of the drive piston relative to the crank of the engine piston is rotated by an angle of 10 ° bO in the direction opposite to the rotation of the crankshaft.
    FIG. 1 shows a hammer drill, hammering action; in fig. 2-5 section A-A in FIG. 1 (the driving jib is at the top dead center); in fig. 3 - the same / drive piston is at the bottom dead center.
    , I A handle 2 is fixed to the rear end of the case 1 of the drill hammer. On the opposite side of the handle 2 of the case 1 there is a tool holder 3. In the Corps
    1 mounted for rotation
    crankshaft 4 internal combustion engine. On the neck 5, the crankshaft is rotatably attached to the crank b, which is connected to the piston 7, the piston 7 of the engine is located in the cylinder 8. At the upper end of the crankshaft 4, the crank 9 is connected to the crankshaft 4 by thread 10. On the neck 11 crank 9 is fixed connecting rod 12 percussion mechanism,
    5 A connecting rod 12 is connected to a drive piston 13, for example, a pneumatic percussion mechanism. The piston 13 is housed in the support sleeve 14. Thus, the percussion mechanism is associated with the engine.
    0 internal combustion. On the housing 1 in the area of the crank 9, the intake valve 15 is located. In the intake valve 15, the ball 16 is pressed against the seat 1 of the valve 15 by means of a spring 18
    5. The inlet valve 15 functions as a check or one-way valve. The motor drive 13 moves in the direction of the tool holder 3, air or air-fuel mixture is sucked through the intake valve 15 into the piston piston chamber 19 in which the crankshaft 9 and the crank 12 move, the cam 2p 3 9 is hermetically sealed off from the rest of the body 1 by a seal 5, In addition, the chamber 19 has an outlet 21 through which the pipe 22 is connected to the entrance slit 23 of the cylinder 3. When the driving piston 13 changes its direction and moves in the direction of the handle 2, the volume decreases The chamber 19 and the air in it or the mixture of air and fuel in it is pushed through conduit 22. When poreen 7 opens the inlet slit 23, air can flow into 1 {24 combustion volume. In this case, the burnt exhaust gases contained after ignition in the combustion chamber 24 are forced out through the exhaust gap 25. The combustion chamber 24 is purged. At the lower end of the crankshaft 4, a flywheel 26 is installed. The flywheel 26 serves as a compensator between the power output of the internal combustion engine and the power consumption of the engine during the compression and impact phase of the impact tool. In addition, the flywheel additionally performs the functions of a generator for generating ignition voltage and a fan wheel for creating an air flow, which is sucked through the overlap 27 and is pumped through the cylinder 8 The crankshaft spindle chamber 19 of the drive piston 13 is isolated by a piston 7 seal 28 engine
    Impact on the rock wasp. They exist when the driving piston 13 rises at the top dead center (Fig. 2).
    The piston 7 of the engine at this moment passes its position of the TDC relative to the direction of rotation (arrow p, fig. 2). as a result, the crank neck 11 of the percussion instrument is shifted by an angle ct relative to the position of the neck 5, while the impact
    the tool is delayed relative to the tact of the internal combustion engine at the same angle oL. With further rotation of the crank 2, the volume of the chamber 19 decreases and the air or mixture of air and fuel in it is pushed out through the outlet 21. Such a lagging impact tool compared to the internal combustion engine /
    0 ie compared to a two-stroke engine, in which the crankcase acts as a purge pump, results in the drive piston at the end of the idle stroke of the drill hammer during the entire purge process
    5 is in the bottom dead center h (Fig. 3),
    The piston 7 moves in the opposite direction. When this happens, the mixture of air and fuel is compressed,
    0 enters from chamber 19 through outlet 21 and inlet 23 into the combustion chamber 24. The energy stored in the flywheel 26 can be used almost completely to compress the mixture of air and fuel contained in the combustion chamber 24. When the engine is in operation, it is possible to realize different impact modes on the rocks by shifting the curves of the drive piston 13 and engine piston 7 relative to each other.
    The turning range is 10 opposite direction
    5 to the direction of rotation of the crankshaft 4. For the middle class of rocks, the favorable mode is realized at a rotation angle of 401
    When using the invention, rocks are destroyed by a compact device with autonomous power, and the release of harmful gases into the atmosphere is relatively low.
    FIG. I
    权利要求:
    Claims (2)
    [1]
    1. DRILLING / HAMMER, including housing, engine, internal combustion engine with a combustion chamber and a crankshaft with
    14 1312 9 1117 of Fig. 1 with a connecting rod for communicating the reciprocating movement to the drive piston, as well as the camera of the crank of the drive piston and the crank of the engine piston, characterized in that, in order to increase. 19 Efficiency and improved lubrication conditions while reducing the degree of -. air pollution by exhaust gases, the drive piston crank chamber is equipped with an inlet valve and is isolated from the engine piston crank chamber, and an exhaust hole is made in the drive piston crank chamber * through which the drive piston crank chamber is in communication with the engine combustion chamber. ,
    SU., 1071233 A, 1071233
    [2]
    2. Hammer drill according to π. 1, characterized in that in the radial plane of the shaft the crank of the drive piston relative to the crank of the piston of the engine is rotated by an angle of 10 - 60 ° in the opposite direction to the rotation of the crankshaft ..
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    同族专利:
    公开号 | 公开日
    ATA523779A|1983-02-15|
    SE436989B|1985-02-04|
    GB2027629B|1982-12-08|
    AT372327B|1983-09-26|
    AU4923079A|1980-02-21|
    HU180243B|1983-02-28|
    DK149510C|1986-12-22|
    IE791469L|1980-02-14|
    FI791781A|1980-02-15|
    YU40846B|1986-06-30|
    FR2433632A1|1980-03-14|
    NL186530C|1990-12-17|
    FR2433632B1|1983-05-27|
    CA1118689A|1982-02-23|
    IE48460B1|1985-01-23|
    IT1125390B|1986-05-14|
    MX147430A|1982-12-02|
    FI71818B|1986-10-31|
    DD145243A5|1980-12-03|
    NL7904806A|1980-02-18|
    DK338679A|1980-02-15|
    AU529523B2|1983-06-09|
    ES482955A1|1980-03-01|
    DE2835570A1|1980-02-28|
    JPS6134951B2|1986-08-11|
    GB2027629A|1980-02-27|
    IT7923950D0|1979-06-28|
    NO150027C|1984-08-08|
    PL217730A1|1980-04-21|
    ZA793299B|1980-06-25|
    FI71818C|1987-02-09|
    JPS5531590A|1980-03-05|
    YU182579A|1982-08-31|
    CS208125B2|1981-08-31|
    DE2835570C2|1987-01-29|
    PL117394B1|1981-07-31|
    BE878204A|1979-12-03|
    SE7906633L|1980-02-15|
    NO792624L|1980-02-15|
    DK149510B|1986-07-07|
    CH641713A5|1984-03-15|
    NO150027B|1984-04-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2524313C2|2010-02-17|2014-07-27|ПРИМАВИС С.р.л.|Two-stroke low-fuel-consumption low-emission ice|
    RU2577635C2|2011-08-09|2016-03-20|Лидия Петровна Ивлева|Device for percussion-rotary engraving of material surface|GB255519A|1925-04-21|1926-07-21|John Forster Alcock|Improvements in or relating to percussive tools|
    FR943775A|1946-08-15|1949-03-17|Chicago Pneumatic Tool Co|Motorized striker tool|
    GB698026A|1951-04-20|1953-10-07|Porsche Konstruktionen Gmbh|Improvements in and relating to air-cooled two-stroke internal combustion engines|
    FR1102598A|1954-04-08|1955-10-24|Peugeot Cycles|Internal combustion engine|
    US3154154A|1962-02-05|1964-10-27|Atlas Copco Ab|Percussion tools incorporating a combustion cylinder for driving a reciprocable hammer piston|
    SE342166B|1970-05-29|1972-01-31|Bergman G|
    GB1499587A|1974-11-20|1978-02-01|Max Co Ltd|Internal combustion machines|JPS6477150A|1988-07-25|1989-03-23|Hitachi Ltd|Manufacture of semiconductor device|
    DE3936849A1|1989-11-06|1991-05-08|Bosch Gmbh Robert|ELECTRICALLY DRIVED MACHINE TOOL|
    US6390034B1|2000-12-07|2002-05-21|Wacker Corporation|Reciprocating impact tool having two-cycle engine oil supply system|
    DE102010004724A1|2010-01-15|2011-07-21|Wacker Neuson SE, 80809|Drilling and / or hammer with cooling of device components|
    CN102936998B|2012-11-08|2015-09-23|泉州市双环能源科技有限公司|Free-piston type percussion drilling system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2835570A|DE2835570C2|1978-08-14|1978-08-14|
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