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公开(公告)号：US4126194A
公开(公告)日：1978-11-21
申请号：US814352
申请日：1977-07-11
申请人： Robert F. Evans
发明人： Robert F. Evans
CPC分类号： E21B10/18
摘要： A three cone rock bit includes an improved circulation system for drilling fluid which increases the horizontal flow vector of the fluid adjacent the bottom surface of the hole being drilled. A pair of nozzles, located near the hole perimeter and between adjacent pairs of drilling cones, inject drilling fluid at one side of the hole. An extended pickup tube terminating between the remaining pair of drilling cones and close to the bottom of the hole being drilled channels fluid from the bottom of the hole to the annulus between the hole and the drill string.
摘要翻译： 三锥形钻头包括用于钻井流体的改进的循环系统，其增加了邻近待钻孔的底表面的流体的水平流动矢量。 位于孔周边附近和相邻的钻孔对之间的一对喷嘴在孔的一侧注入钻井液。 终止在剩余的一对钻孔之间并且靠近被钻孔的底部的延伸的拾取管将流体从孔的底部通向孔和钻柱之间的环形空间。
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公开(公告)号：US4089382A
公开(公告)日：1978-05-16
申请号：US784019
申请日：1977-04-04
CPC分类号： E21B10/10 , Y10T403/76
摘要： A large hole earth boring bit with a clevis-type coupling for mounting the rolling cutters to the bit. The mounting apparatus includes a first member having two ends with aligned holes and a second member having its end inserted between the two ends. The end of the second member has an aperture that is spaced slightly out of alignment with the apertures in the first member, providing a generally elliptical passage. Bearing surfaces prevent them from coming into alignment. A pair of wedges are inserted into the elliptical passage and drawn together to exert a force in the direction toward alignment of the apertures. The force exerted is transmitted into the base, positively locking the two members together.
摘要翻译： 一个大孔钻头，带有U形夹式联轴器，用于将滚刀安装到钻头上。 安装装置包括具有对准的孔的两端的第一构件和其端部插入在两端之间的第二构件。 第二构件的端部具有与第一构件中的孔略微不对准的孔，提供大致椭圆形的通道。 轴承表面防止它们对齐。 将一对楔形物插入到椭圆形通道中并被拉伸在一起以朝向孔的对准方向施加力。 施加的力传递到基座中，将两个构件正确地锁定在一起。
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公开(公告)号：US4004644A
公开(公告)日：1977-01-25
申请号：US652864
申请日：1976-01-27
摘要： In the saddle structure of the improved drill bit cutter assembly of the invention both spaced-apart legs are provided with bores each extending through the leg to receive a clamping bolt. These bores extend in directions including between them an angle of up to 90.degree.. The shaft-receiving recess, between the legs, has a polygonal shape complementing that of the end portion of the shaft.
摘要翻译： 在本发明的改进的钻头切割器组件的鞍座结构中，两个间隔开的腿都设有孔，每个孔都延伸穿过腿部以接收夹紧螺栓。 这些孔在包括它们之间的方向上延伸达90度的角度。 腿之间的轴接收凹部具有与轴的端部部分相互补充的多边形形状。
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公开(公告)号：US3990525A
公开(公告)日：1976-11-09
申请号：US642288
申请日：1975-12-19
申请人： Samuel Lee Penny
发明人： Samuel Lee Penny
摘要： A sealing system for a rotary rock bit acts as a barrier to the pulverized cuttings and other materials in the borehole and prevents the materials from entering the bearing area through the cone mouth opening of the cone cutter. The bearing rollers are substantially captured in a groove machined into the cone cutter. This allows a seal unit to be located at a substantial distance from the hostile drilling environment and increases seal life. The shirttail portion of the bit body and the base of the cone cutter cooperate to retard materials in the borehole from contacting the seal unit. The sealing system is provided without reducing the bearing capacity of the bit's bearing system.
摘要翻译： 用于旋转岩石钻头的密封系统用作对钻孔中的粉碎的切屑和其他材料的阻挡物，并且防止材料通过锥形切割器的锥形开口进入轴承区域。 轴承辊基本上被捕获在加工成锥形切割器的凹槽中。 这允许密封单元位于与敌对钻井环境相当远的距离处，并增加密封寿命。 钻头体的衬衫尾部和锥形切割器的基部配合以阻止钻孔中的材料接触密封单元。 提供密封系统，而不会降低钻头轴承系统的承载能力。
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公开(公告)号：US3921734A
公开(公告)日：1975-11-25
申请号：US30035372
申请日：1972-10-17
申请人： KENNAMETAL INC
发明人： GOODFELLOW ROBERT D
摘要： A raise boring head which includes a plurality of rolling cutters distributed over the head and including circumferentially spaced gauge cutters. Each cutter has a rotatable part and a support shaft supporting the rotatable part with the ends of the support shafts carried in saddles fixed to the body of the raise boring head. Each end of each support shaft is formed to a rectangular shape and fits into a rectangular slot in the respective saddle and is secured therein as by bolts. The radially outer sides of the saddles for the gauge cutters are provided with hard wear resistant inserts to reduce the wear thereon.
摘要翻译： 一种提升镗头，其包括分布在头部上并包括周向间隔开的量规切割器的多个滚切机。 每个切割器具有可旋转部分和支撑可旋转部分的支撑轴，支撑轴的端部被固定在镗孔头的主体上。 每个支撑轴的每个端部形成为矩形形状并且装配在相应鞍座中的矩形槽中并且通过螺栓固定在其中。 用于量规切割器的鞍座的径向外侧设置有耐磨损的插入件，以减少其上的磨损。
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公开(公告)号：US3847234A
公开(公告)日：1974-11-12
申请号：US33041273
申请日：1973-02-07
申请人： REED TOOL CO
发明人： SCHUMACHER P , MURDOCH H
CPC分类号： E21B10/24
摘要： A pressure relief device used in a drill bit lubrication system having a flexible membrane defining the outer portion of such lubrication system in a vent passage through the body of the drill bit with the flexible membrane including a puncture or other opening therethrough which seals the lubrication system at all pressure differentials below a pre-selected pressure differential and at such pre-selected pressure differential opens to relieve the pressure differential. The pressure relief device may be constructed to function in both directions, i.e., to relieve both excess pressure within the lubrication system and to relieve against excess external pressures, with the pre-selected relieving pressure differentials being the same or different in opposite directions. This abstract is neither intended to define the invention of the application which, of course, is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.
摘要翻译： 一种在钻头润滑系统中使用的减压装置，其具有限定这种润滑系统的外部部分的柔性膜，该柔性膜在通过钻头主体的通气通道中，柔性膜包括穿过其的穿刺或其他开口，其密封润滑系统 在所有压力差低于预先选定的压力差的情况下，并且在这种预先选择的压力差打开以减轻压力差。 减压装置可以被构造成在两个方向上起作用，即，以减轻润滑系统内的过大压力并减轻过剩的外部压力，同时预选的减压压力在相反方向上相同或不同。 该摘要既不旨在定义本申请的发明，当然由权利要求书来衡量，也不旨在以任何方式限制本发明的范围。
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公开(公告)号：US3739864A
公开(公告)日：1973-06-19
申请号：US3739864D
申请日：1971-08-12
申请人： DRESSER IND
CPC分类号： F16C33/6607 , E21B10/24 , F16C33/6622 , F16C2352/00
摘要： A lubricant reservoir is positioned in each of the three arms of a three cone rotary rock bit to provide lubricant to the bearings located between the cone cutters and the bearing shafts upon which they rotate. A seal is positioned between the cone cutters and the bearing shafts to retain lubricant in the bearing area and to prevent borehole fluids and debris from entering the bearing area. A flexible diaphragm positioned in the lubricant reservoir divides the reservoir into a lubricant portion and a pressure equalizing portion. A vent passage extends from the pressure equalizing portion of the lubricant reservoir to an area on the exterior surface of the bit wherein the borehole fluid pressure on the bit is substantially the same as the borehole fluid pressure on the seal.
摘要翻译： 润滑剂储存器定位在三锥形旋转岩石钻头的三个臂中的每一个中，以向位于锥形切割器和它们旋转的轴承轴之间的轴承提供润滑剂。 密封件位于锥形切割器和轴承轴之间，以将润滑剂保持在轴承区域中并防止钻孔流体和碎屑进入轴承区域。 定位在润滑剂储存器中的柔性隔膜将储存器分成润滑剂部分和均压部分。 排气通道从润滑剂储存器的均压部分延伸到钻头的外表面上的区域，其中钻头上的钻孔流体压力与密封件上的钻孔流体压力基本相同。
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公开(公告)号：US3583503A
公开(公告)日：1971-06-08
申请号：US3583503D
申请日：1969-03-12
申请人： LAWRENCE MFG CO
发明人： COSKI WILLIAM D
摘要： For use with a mining machine or a tunneler and the like, a mounting head having cutters thereon for eroding the walls and facing of the bore of the tunnel or mine. The mounting head has scraper assemblies adjacent to the cutters disposed for clearing a path in advance of the cutters. The scraper assemblies are latchingly coupled to the mounting head and resiliently mounted to facilitate their withdrawal from the walls and facing upon encountering nonyielding rock, earth and like substances.
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49.发明授权Specially shaped inserts for compact rock bits,and rolling cutters and rock bits using such inserts 失效特殊形状的紧凑型刀片插入件，以及使用此类刀片的滚刀和刀片
公开(公告)号：US3442342A
公开(公告)日：1969-05-06
申请号：US3442342D
申请日：1967-07-06
申请人： HUGHES TOOL CO
发明人： MCELYA FRED H , CUNNINGHAM ROBERT A
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50.发明授权Earth-boring bit having cutter with replaceable kerf ring with contoured inserts 失效钻头具有可更换的切口环，带有轮廓插入件
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