• 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:
    A mining tool for the breaking-down of minerals, particularly coal. The mining tool includes a chisel with a chisel shaft with a receiving bore and a chisel holder with an insertion bore. The bores are in alignment when a locking bolt is driven into the bores. The locking bolt is a mandrel screw with a threaded portion which over its length includes a sharp thread and a trapezoidal thread. The circumferential surfaces of the trapezoidal thread form a driving-in cone. The mandrel screw can be easily driven into the receiving bore which includes a chuck. In addition, because of the sharp thread, the mandrel screw can be unscrewed quickly, so that a quick chisel exchange is possible.
    公开号:SU1745129A3
    申请号:SU894742505
    申请日:1989-11-13
    公开日:1992-06-30
    发明作者:Браун Герт；Браун Эрнст
    申请人:Хальбах Унд Браун Индустрианлаген (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the mining industry, in particular to the working bodies of mining machines, and can be used in mining operations, in particular coal, using mining machines.
    The purpose of the invention is to increase the productivity of the working body of the mining machine and reduce the complexity of the work of replacing the cutter on the working body of the excavation machine.
    Figure 1 shows the working body of a mining machine for mining; Fig. 2 shows the threaded part of the locking element located in the through-hole of the holder.
    The working body of the mining machine for mining consists of a cutter 1 with a non-circular holder 2 and a tool holder 3 with a socket 4 for accommodating the holder 2 of the tool 1. The tool holder 3 has a transverse hole 5 which is located coaxially with the through hole b
    the holder 2. In the through hole 6 is placed a clamping element 7 for fixing the locking element 8. The locking element 8 is made in the form of a screw with threaded part 9 located at one end.
    The threaded part 9 of the locking element 8 is made with a conical thread section 10 interconnected with each other and a trapezoid thread section 11. The outer surfaces 12 of the trapezoidal profile of each turn of the section 11 with a trapezoidal thread are angled to the longitudinal axis of the locking element 8 and form a cone, the top of which is oriented in the direction opposite to the screw head.
    Preferably, the length of the section 11c trapezoidal thread was at least half the length of the threaded part 9 of the locking element. The end of the locking element on which the threaded part 9 is located. Can be made with a conical section 13, which is matched with a large base.
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    with plot 11 with trapezoidal thread. The locking element 8 in the area between the screw head and its threaded part 9 can be made with a cylindrical section 14 and with a transition section in the form of a centering truncated cone 15.
    The smaller base of the cone 15 is mated to the section 10 with a tapered thread, and the larger base is mated to the cylindrical section 14 of the locking element 8. In this embodiment of the device, the cylindrical section 14 of the locking element 8 is installed with a tension in the through-hole 6 of the holder 2 of the cutter 1 The transitional section of the locking element 8 has a section 16 with a weakened section for cutting off the screw when removing it. It is preferable to perform the clamping element 7 in the form of a cylindrical sleeve of impact-viscous material, the inner diameter of which is less than the outer diameter of the threaded part 9 of the locking element 8.
    The working body of the mining machine for mining works as follows
    When the working tool is moved, the cutter 1 is inserted into the massif and causes the destruction of the mineral, in particular coal. If the mineral is destroyed, the cutter 1 can either become dull or break. To replace the cutter 1 by turning the head of the locking element 8, which can be made in the form of a hexagon, the locking element 8 is twisted out of the clamping element 7, and then the locking element 8 is removed from the transverse hole 5 of the toolholder 3 and the through hole of the holder 2 of the cutter 1. After removing the locking element 8, the holder 2 of the broken cutter 1 is removed from the slot 4 of the toolholder 2 Then the holder 2 of the whole tooling 1 is inserted into the slot 4 of the toolholder 3. To facilitate insertion and then plugging of the locking element 8 into clamping element 7, screw with threaded part 9 may have a tapered section 13
    According to the invention, it is provided that the locking element 8 with the threaded part 9 has a threaded cylindrical section 14 with a centering cone 15 in the transition section, and the outer surface of the cylindrical section 14 with a fit with a specified tolerance enters the through hole 6 of the holder 2 of the cutter 1. As a result, the locking element 8 centers the holder 2 of the cutter 1 in the socket 4 of the toolholder 3.
    The locking element 8 with the threaded part 9 in the transition section may have a specified fracture point. Since the stopper
    due to corrosion, the element 8 may get stuck in the through hole b and its turning out becomes impossible, it is still possible to quickly release the holder 2 of the cutter 1 from the socket 4 of the tool holder 3. For this, the head of the locking element 8 with the cylindrical section 14 can be separated from the threaded part 9 locking element 8 in
    0 section 16 of the specified fracture point. Then the holder 2 of the cutter 1 can be pulled out of the slot 4 of the tool holder 3, and the remaining part of the through-hole b of the locking element 8 with the threaded part 9 can be dislodged.
    权利要求:
    Claims (3)
    [1]
    5 claims
    1. The working body of the mining machine for the extraction of minerals, in particular coal, including a cutter with a holder, in which the transverse through
    0 a hole for accommodating the locking element, a tool holder with a socket for accommodating the tool holder and a transverse hole for passing the locking element that is coaxial with the
    5 through hole in the holder, placed in the through hole of the holder clamping element for fixing the locking element and installed with the possibility of interaction with the clamping element
    0 locking element, characterized in that, in order to increase productivity and reduce the complexity of the work of replacing the cutter on the working body of the excavation machine, the locking element is made
    5 in the form of a screw with a threaded part located at one end of the screw, the threaded part of the screw having an interface with a tapered thread and a trapezoidal section
    0 thread that is located at the free end of the screw stem, and the outer surfaces of the trapezoidal profile of each turn of the trapezoidal section are angled to the longitudinal axis of the screw and form a cone, the top of which is oriented in the direction opposite to the screw head.
    2. The working organ of claim 1, wherein the length of the section with the trapezoidal thread is equal to at least half the length of the threaded part of the screw stem.
    [2]
    3. The working body according to claim 1 or 2, about t l and h a - y and with the fact that the end of the screw stem, on which the threaded part is located,
    [3]
    5 is made with a conical section, while the conical section of the rod is conjugated by its large base with the section with a trapezoidal thread.
    A. Working body according to one of the p. 1-3, characterized in that the screw stem
    in the area between the screw head and its threaded part, it is made with a cylindrical section and with a transitional area in the form of a centering truncated cone, with the smaller base of the truncated cone matching the section with a tapered thread, and its larger base is matching the cylindrical section of the screw stem the cylindrical section of the screw stem is mounted with a tension in the through-hole of the tool holder.
    B. A working organ according to one of the preceding claims, characterized in that the transition section of the screw stem has a section with a weakened section for cutting the screw when it is removed.
    6. A working member as claimed in one of claims 1 to 5, characterized in that the clamping element is made in the form of a cylindrical sleeve of impact-viscous material, the inner diameter of which is less than the outer diameter of the threaded part of the screw stem.
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    2
    类似技术:
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    US4368789A|1983-01-18|Drilling apparatus
    US2686447A|1954-08-17|Stud extractor structure
    US6725518B2|2004-04-27|Casting repair method
    SU1745129A3|1992-06-30|Winning machine tool
    US2853723A|1958-09-30|Rivet removing tool with cutting edges and impact surface
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    同族专利:
    公开号 | 公开日
    US4998778A|1991-03-12|
    GB8924978D0|1989-12-28|
    GB2226835B|1992-11-04|
    DE3900140C1|1990-08-16|
    GB2226835A|1990-07-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    BE795710A|1972-09-14|1973-06-18|Gewerk Eisenhuette Westfalia|PIC, ESPECIALLY FOR COAL PLANER OR EQUIVALENT MACHINE|
    DE3116424A1|1981-04-24|1982-11-11|Hilti AG, 9494 Schaan|DUEBEL|
    DE3122868C2|1981-06-10|1986-06-26|Gewerkschaft Eisenhütte Westfalia, 4670 Lünen|Chisel attachment, in particular for coal planes|
    DE3411602A1|1982-11-13|1985-10-03|Peters, Albert, 4000 Düsseldorf|Winning apparatus with rotary/tilting bit and sealed-off bit pocket|
    GB2164679B|1984-09-21|1987-10-28|Spencer Todwick Limited|Tool retaining devices|
    DE8633094U1|1986-12-10|1987-02-19|Halbach & Braun Industrieanlagen, 5600 Wuppertal, De|
    DE3731459C1|1987-09-18|1989-03-16|Hoesch Ag|Cutting wheel for suction or bucket wheel excavators|DE9306577U1|1993-05-01|1993-07-01|Braun, Ernst, 4300 Essen, De|
    US5735656A|1995-12-19|1998-04-07|Textron Inc.|Self-sealing through adjustor|
    DE20320163U1|2003-12-29|2004-03-04|Dbt Gmbh|Chisel holder for a planer chisel|
    DE20320161U1|2003-12-29|2004-03-04|Dbt Gmbh|Chisel holder for a planer chisel of a coal or mining plane and planer chisel|
    USD669505S1|2011-11-23|2012-10-23|Wirtgen Gmbh|Chisel holder bar|
    CN104047601A|2013-03-16|2014-09-17|中煤张家口煤矿机械有限责任公司|Fastener used for coal plough cutter|
    NZ627813A|2013-06-18|2016-08-26|Esco Corp|Mineral winning pick, pick holder, and combination|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19893900140|DE3900140C1|1989-01-04|1989-01-04|
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