CN111779452A - A mine reaming drill - Google Patents
A mine reaming drill Download PDFInfo
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- CN111779452A CN111779452A CN202010743569.2A CN202010743569A CN111779452A CN 111779452 A CN111779452 A CN 111779452A CN 202010743569 A CN202010743569 A CN 202010743569A CN 111779452 A CN111779452 A CN 111779452A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 10
- 239000010432 diamond Substances 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 238000005065 mining Methods 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 239000010937 tungsten Substances 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 13
- 238000005553 drilling Methods 0.000 abstract description 13
- 238000012423 maintenance Methods 0.000 abstract description 8
- 230000008439 repair process Effects 0.000 abstract description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
本发明属于煤矿钻孔技术领域，具体地，涉及一种矿用扩孔钻头，包括钻头本体，所述钻头本体的一端设有钻尖，另一端设有用于连接钻杆的螺纹内孔，所述钻头本体的外圆面上设有螺旋导料槽，所述钻尖上设有钻刃，所述钻刃上设有碳化钨金刚石复合耐磨层，所述钻头本体的外圆面上沿轴向间隔设有多圈环形甩链或环形钢缆，所述环形甩链或环形钢缆与钻头本体的外圆面之间留设有甩动间隙，所述环形甩链或环形钢缆远离钻头本体的一侧均布有金刚石复合片。本装置结构简单，灵活度和可靠性高，不易卡涩，在保证高效扩孔的同时方便退钻，可降低装置的检修维护成本。
The invention belongs to the technical field of coal mine drilling, and in particular relates to a mine reaming drill bit, comprising a drill bit body, one end of the drill bit body is provided with a drill tip, and the other end is provided with a threaded inner hole for connecting a drill pipe, so The outer surface of the drill body is provided with a spiral guide groove, the drill tip is provided with a drill edge, and the drill edge is provided with a tungsten carbide diamond composite wear-resistant layer. There are multiple rings of annular slinging chains or annular steel cables at axial intervals, and a swinging gap is left between the annular slinging chains or annular steel cables and the outer surface of the drill body, and the annular slinging chains or annular steel cables are far away from One side of the drill bit body is evenly distributed with diamond composite sheets. The device has the advantages of simple structure, high flexibility and reliability, and is not easy to be jammed. While ensuring efficient hole reaming, it is convenient to withdraw drilling, and can reduce the repair and maintenance cost of the device.
Description
技术领域technical field
本发明属于煤矿钻孔技术领域，具体地，涉及一种矿用扩孔钻头。The invention belongs to the technical field of coal mine drilling, in particular to a mine reaming drill bit.
背景技术Background technique
煤矿采集前，需要钻孔抽采瓦斯，钻孔时需要从岩石层向煤层钻孔，为节省钻孔成本并增加瓦斯抽采效率，需要在保证岩石层钻孔段孔径不变的情况下对煤层段的钻孔进行扩孔处理，以扩大煤层内孔的表面积，提高瓦斯的溢出效率。Before coal mining, it is necessary to drill holes to extract gas. When drilling, it is necessary to drill holes from the rock layer to the coal seam. In order to save the drilling cost and increase the gas extraction efficiency, it is necessary to ensure that the hole diameter of the drilled hole in the rock layer remains unchanged. The drilling in the coal seam section is subjected to reaming treatment to expand the surface area of the inner hole of the coal seam and improve the gas overflow efficiency.
现有的扩孔钻头一般通过扩孔臂进行扩孔，扩孔臂与钻杆的连接部在扩孔过程中受到的应力冲击较大，容易疲劳损伤，且扩孔臂收缩时容易与钻杆之间夹持大块煤粒，导致收缩不到位，影响退钻，装置可靠性差，检修维护成本较高。The existing reaming bit generally reams the hole through the reaming arm, and the connection part between the reaming arm and the drill rod is subjected to a large stress impact during the reaming process, which is easy to be fatigued and damaged, and the reaming arm is easily contracted. The large coal particles are clamped between them, resulting in insufficient shrinkage, affecting the withdrawal of the drill, poor reliability of the device, and high maintenance and repair costs.
为此，亟需一种矿用扩孔钻头，以提高装置的可靠性，在保证高效扩孔的同时方便退钻，降低装置的检修维护成本。Therefore, there is an urgent need for a mine reaming drill bit, which can improve the reliability of the device, facilitate drilling back while ensuring efficient reaming, and reduce the repair and maintenance cost of the device.
发明内容SUMMARY OF THE INVENTION
为了解决上述技术问题，本发明提供了一种矿用扩孔钻头，包括钻头本体，所述钻头本体的一端设有钻尖，另一端设有用于连接钻杆的螺纹内孔，所述钻头本体的外圆面上设有螺旋导料槽，所述钻尖上设有钻刃，所述钻刃上设有碳化钨金刚石复合耐磨层，所述钻头本体的外圆面上沿轴向间隔设有多圈环形甩链或环形钢缆，所述环形甩链或环形钢缆与钻头本体的外圆面之间留设有甩动间隙，所述环形甩链或环形钢缆远离钻头本体的一侧均布有金刚石复合片。In order to solve the above technical problems, the present invention provides a mining reaming drill, including a drill body, one end of the drill body is provided with a drill tip, and the other end is provided with a threaded inner hole for connecting a drill rod. The outer surface of the drill bit is provided with a spiral guide groove, the drill tip is provided with a drill edge, the drill edge is provided with a tungsten carbide diamond composite wear-resistant layer, and the outer surface of the drill bit body is spaced along the axial direction There are multiple rings of annular slinging chains or annular steel cables, and a swinging gap is left between the annular slinging chains or annular steel cables and the outer surface of the drill body, and the annular slinging chains or annular steel cables are far away from the main body of the drill bit. There are diamond composite sheets evenly distributed on one side.
优选的，所述多圈环形甩链或环形钢缆的扩孔半径由钻头本体的钻尖端向螺纹内孔端逐渐增大，便于沿钻深方向实现渐扩式扩孔，且有利于延长环形甩链或环形钢缆的使用寿命。Preferably, the reaming radius of the multi-circle annular slinging chain or the annular steel cable gradually increases from the drill tip of the drill bit body to the threaded inner hole end, which facilitates the realization of progressive reaming along the drilling depth direction and is conducive to extending the annular The service life of the chain or loop wire rope.
优选的，所述环形甩链或环形钢缆靠近钻头本体的一侧均布有2～6个柔性连接件，所述柔性连接件远离环形甩链或环形钢缆的一端连接在钻头本体的外圆面上。通过柔性连接件，使装置在不旋转时，环形甩链或环形钢缆变形灵活，便于在钻孔内进钻或退钻，当装置旋转时，保证环形甩链或环形钢缆在惯性作用下快速甩离钻头本体进行扩孔作业，同时牢固牵引环形甩链或环形钢缆在合适的半径范围内，保证扩孔孔径达到设计要求。Preferably, 2 to 6 flexible connecting pieces are evenly distributed on the side of the annular slinging chain or the annular steel cable close to the drill bit body, and the end of the flexible connecting piece away from the annular slinging chain or the annular steel cable is connected to the outside of the drill bit body on a round surface. Through the flexible connecting piece, when the device is not rotating, the ring-shaped chain or the ring-shaped steel cable can be deformed flexibly, which is convenient for drilling in or out of the drilled hole. Quickly throw away the drill body for hole reaming operation, and at the same time firmly pull the ring slinging chain or ring steel cable within a suitable radius to ensure that the reaming hole diameter meets the design requirements.
优选的，所述柔性连接件为连接链或钢丝绳，有利于保证环形甩链或环形钢缆连接的牢固性和持久性。Preferably, the flexible connecting member is a connecting chain or a steel wire rope, which is beneficial to ensure the firmness and durability of the connection of the annular slinging chain or the annular wire rope.
优选的，所述环形甩链和连接链均采用矿用高强度圆环链，自由度高，不易卡涩煤粒，检修更换方便。Preferably, both the annular slinging chain and the connecting chain adopt mining high-strength annular chain, which has a high degree of freedom, is not easy to jam coal particles, and is convenient for maintenance and replacement.
优选的，所述环形甩链或环形钢缆的外表面均设有高强耐磨金属层，用于提高环形甩链或环形钢缆的耐磨性，延长装置的使用寿命。Preferably, the outer surface of the annular chain slinger or the annular steel cable is provided with a high-strength wear-resistant metal layer, which is used to improve the wear resistance of the annular chain slinger or the annular steel cable and prolong the service life of the device.
优选的，所述高强耐磨金属层的材质为27SiMn材质，该材质强度高，耐磨性好，有利于提高装置的可靠性。Preferably, the material of the high-strength wear-resistant metal layer is 27SiMn, which has high strength and good wear resistance, which is beneficial to improve the reliability of the device.
本发明还包括能够使该矿用扩孔钻头正常使用的其它组件，均为本领域的常规技术手段，另外，本发明中未加限定的装置或组件均采用本领域中的常规技术手段。The present invention also includes other components that can make the mining reaming bit work normally, which are conventional technical means in the art. In addition, the devices or components not limited in the present invention are all conventional technical means in the art.
该矿用扩孔钻头，使用时通过钻杆驱动。当钻杆旋转时，钻头本体上的环形甩链或环形钢缆在惯性作用下甩动，实现对钻孔的渐扩式扩孔，所述环形甩链或环形钢缆与钻头本体的外圆面之间留设甩动间隙，既能保证扩孔的孔径满足设计要求，又避免环形甩链或环形钢缆在扩孔时与钻头本体发生长时间摩擦，从而保证了装置的可靠性，通过在环形甩链或环形钢缆远离钻头本体的一侧均布金刚石复合片，提高了环形甩链或环形钢缆的耐磨性。由于环形甩链或环形钢缆自由度高，变形灵活，不会发生煤粒卡涩的问题，在保证高效扩孔的同时方便退钻，从而可提高扩孔装置的可靠性，保证煤矿钻孔的扩孔效率，也有利于降低装置的检修维护成本。The mine reaming drill bit is driven by a drill pipe when in use. When the drill pipe rotates, the annular slinging chain or the annular steel cable on the drill bit body is swayed under the action of inertia to realize the gradual expansion reaming of the drilled hole. There is a swinging gap between the surfaces, which can not only ensure that the diameter of the reaming hole meets the design requirements, but also avoid the long-term friction between the ring-shaped chain or the ring-shaped steel cable and the drill body during reaming, thus ensuring the reliability of the device. The diamond composite sheets are evenly distributed on the side of the annular slinging chain or the annular steel cable away from the drill bit body, which improves the wear resistance of the annular slinging chain or the annular steel cable. Due to the high degree of freedom and flexible deformation of the annular slinging chain or the annular steel cable, the problem of coal particle jamming will not occur, and it is convenient to withdraw the drill while ensuring efficient hole reaming, thereby improving the reliability of the reaming device and ensuring the drilling of coal mines. The high hole reaming efficiency is also conducive to reducing the maintenance cost of the device.
本发明的有益效果是，本装置结构简单，灵活度和可靠性高，不易卡涩，在保证高效扩孔的同时方便退钻，可降低装置的检修维护成本。The beneficial effects of the present invention are that the device has simple structure, high flexibility and reliability, is not easy to jam, facilitates drilling retreat while ensuring efficient hole reaming, and can reduce the repair and maintenance cost of the device.
附图说明Description of drawings
下面结合附图和实施例对本发明进一步说明。The present invention will be further described below with reference to the accompanying drawings and embodiments.
图1是本发明的整体结构示意图。Figure 1 is a schematic diagram of the overall structure of the present invention.
具体实施方式Detailed ways
下面结合本发明实施例中的附图以及具体实施例对本发明进行清楚地描述，在此处的描述仅仅用来解释本发明，但并不作为对本发明的限定。基于本发明中的实施例，本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The present invention will be clearly described below with reference to the accompanying drawings and specific embodiments in the embodiments of the present invention, and the descriptions herein are only used to explain the present invention, but are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the present invention. Inside.
实施例1Example 1
如图1所示，本发明提供了一种矿用扩孔钻头，包括钻头本体1，所述钻头本体1的一端设有钻尖2，另一端设有用于连接钻杆的螺纹内孔3，所述钻头本体1的外圆面上设有螺旋导料槽4，所述钻尖2上设有钻刃，所述钻刃上设有碳化钨金刚石复合耐磨层，所述钻头本体1的外圆面上沿轴向间隔设有多圈环形甩链5，所述环形甩链5与钻头本体1的外圆面之间留设有甩动间隙，所述环形甩链5远离钻头本体1的一侧均布有金刚石复合片。As shown in FIG. 1 , the present invention provides a mining reaming drill, comprising a
所述环形甩链5靠近钻头本体1的一侧均布有2个柔性连接件6，所述柔性连接件6远离环形甩链5的一端连接在钻头本体1的外圆面上。通过柔性连接件6，使装置在不旋转时，环形甩链5变形灵活，便于在钻孔内进钻或退钻，当装置旋转时，保证环形甩链5在惯性作用下快速甩离钻头本体1进行扩孔作业，同时牢固牵引环形甩链5在合适的半径范围内，保证扩孔孔径达到设计要求。所述柔性连接件6为连接链或钢丝绳，有利于保证环形甩链5连接的牢固性和持久性。所述环形甩链5均采用矿用高强度圆环链，自由度高，不易卡涩煤粒，检修更换方便。所述环形甩链的外表面设有27SiMn材质高强耐磨金属层，用于提高环形甩链或环形钢缆的耐磨性，延长装置的使用寿命。Two
该矿用扩孔钻头，使用时通过钻杆驱动。当钻杆旋转时，钻头本体1上的环形甩链5在惯性作用下甩动，实现对钻孔的渐扩式扩孔，所述环形甩链5与钻头本体1的外圆面之间留设甩动间隙，既能保证扩孔的孔径满足设计要求，又避免环形甩链5在扩孔时与钻头本体1发生长时间摩擦，从而保证了装置的可靠性，通过在环形甩链5远离钻头本体1的一侧均布金刚石复合片，提高了环形甩链5的耐磨性。由于环形甩链5自由度高，变形灵活，不会发生煤粒卡涩的问题，在保证高效扩孔的同时方便退钻，从而可提高扩孔装置的可靠性，保证煤矿钻孔的扩孔效率，也有利于降低装置的检修维护成本。The mine reaming drill bit is driven by a drill pipe when in use. When the drill rod rotates, the annular slinging chain 5 on the
以上已经描述了本发明的实施例，上述说明是示例性的，并非穷尽性的，并且也不限于所披露的实施例。在不偏离所说明实施例的范围和精神的情况下，对于本技术领域的普通技术人员来说许多修改和变更都是显而易见的。Embodiments of the present invention have been described above, and the foregoing description is exemplary, not exhaustive, and not limiting of the disclosed embodiments. Numerous modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (7)
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| CN212642599U (en) * | 2020-07-29 | 2021-03-02 | 河南理工大学 | A mine reaming drill |
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2020
- 2020-07-29 CN CN202010743569.2A patent/CN111779452B/en active Active
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