公开(公告)号：US5184923A

公开(公告)日：1993-02-09

申请号：US790242

申请日：1991-11-08

申请人： Frank Calandra, Jr. ,  John C. Stankus ,  Paul A. Yacisin

发明人： Frank Calandra, Jr. ,  John C. Stankus ,  Paul A. Yacisin

IPC分类号： E21D21/00

CPC分类号： E21D21/008

摘要： A tapered camming plug positioned within an expansion shell is threaded onto an upper end portion of an elongated bolt advanced behind a resin cartridge system into a bore hole drilled in a rock formation. A bearing plate is carried on the opposite end of the bolt and abuts the rock formation surrounding the bore hole. The cartridge is ruptured by upward thrust and rotation of the bolt to release the resin components for mixing. The mixed resin flows downwardly in the bore hole into surrounding relation with the camming plug and expansion shell. The expansion shell includes a plurality of expansion fingers each formed integral at one end portion with a ring end portion of the shell and extending upwardly to a free end portion for outward expansion into engagement with the wall of the bore hole as the camming plug advances downwardly on the bolt after the resin is mixed. The shell ring end portion has a circular opening for receiving the bolt and an outer, non-circular surface forming a wall having areas of non-uniform thickness to increase the area of the annulus between the ring end portion and the wall of the bore hole. The increased area around the ring end portion facilitates the insertion of the expansion shell assembly into the resin by permitting the resin to flow past the shell and the ring end portion and bond the expansion shell and a portion of the bolt to the rock formation within the bore hole.

摘要翻译： 定位在膨胀壳内的锥形凸轮插头螺纹连接到在树脂料筒系统后面推进的细长螺栓的上端部分，以钻进岩层中的钻孔。 承载板承载在螺栓的相对端，并与钻孔周围的岩层相邻。 通过螺栓的向上推力和旋转来释放料筒以释放用于混合的树脂部件。 混合树脂在钻孔中向下流动，与凸轮塞和膨胀壳相连。 膨胀壳包括多个膨胀爪，每个膨胀爪在一个端部处与壳体的环形端部一体形成并且向上延伸到自由端部分，用于随着凸轮塞向前推进而向外膨胀成与孔眼的壁接合 在树脂混合后的螺栓上。 壳环端部具有用于接收螺栓的圆形开口和形成具有不均匀厚度区域的壁的外部非圆形表面，以增加环形端部与钻孔壁之间的环形区域 。 环形端部周围增加的面积有助于通过允许树脂流过壳体和环形端部部分将膨胀壳体组件插入树脂中，并将膨胀壳体和一部分螺栓结合到内部的岩层中 钻孔。

公开(公告)号：US5161916A

公开(公告)日：1992-11-10

申请号：US709349

申请日：1991-06-03

申请人： Claude C. White ,  Scott A. White

发明人： Claude C. White ,  Scott A. White

IPC分类号： E21D21/00

CPC分类号： E21D21/008

摘要： An expansion anchor received within a predrilled bore for mounting a platelike panel to a portion of stratum in which the bore is drilled and including a bolt having a head on a lower end thereof, an upper portion, distal the head, defining a set of right hand threads thereon and a lower portion, intermediate the upper portion and the head, defining a set of left hand threads thereon. A destructible thrust nut having at least one groove therein is threadably connected to the lower portion and moves upwardly thereon when the rod is rotated in a clockwise direction. A cutting member, having an annular base supported by the thrust nut for sliding movement along the bolt and a plurality of cutting fingers connected to the base in divergent relation to the bolt, is urged upwardly by the thrust nut when the rod is rotated in the predetermined direction. The cutting fingers have at least one blade extending transversely thereon for cutting a groove in the stratum to expand the diameter of the bore a predetermined depth therein. An expansion nut is threadably connected to the upper portion and moves downwardly thereon to expand the cutting fingers and thereby direct the upwardly mobile cutting blades into the stratum. The downward motion of the expansion nut seats the fingers within the grooves cut thereby and secures the bolt within the bore. A rupturable resin container is provided to dispense catalyst activated resin within the bore to further secure the expansion anchor therein.

摘要翻译： 一个膨胀锚接收在预钻孔中，用于将板状板安装到其中钻孔的一部分地层，并且包括在其下端具有头部的螺栓，头部远端的上部，限定一组右 在其上的手螺纹和在上部和头部之间的下部，在其上限定一组左手螺纹。 其中具有至少一个凹槽的可破坏推力螺母在杆沿顺时针方向旋转时螺纹连接到下部并向上移动。 具有由推力螺母支撑的环形基座的切割构件，用于沿着螺栓滑动运动，并且当杆在其中旋转时，由推力螺母向上被推向与基座发生相对于螺栓连接的多个切割指 预定方向。 切割指具有至少一个横向延伸的刀片，用于切割层中的凹槽，以将孔的直径扩大到其中的预定深度。 膨胀螺母螺纹连接到上部并向下移动以扩大切割指，从而将向上移动的切割刀片引导到层中。 膨胀螺母的向下运动将手指放在由此切割的槽内，并将螺栓固定在孔内。 提供可破裂的树脂容器以在孔内分配催化剂活化树脂，以进一步将膨胀锚固定在其中。

公开(公告)号：US5009549A

公开(公告)日：1991-04-23

申请号：US363274

申请日：1989-05-22

申请人： John C. Stankus

发明人： John C. Stankus

IPC分类号： E21D20/02 ,  E21D21/00 ,  F16B13/00 ,  F16B13/06 ,  F16B13/14

CPC分类号： F16B13/066 ,  E21D20/025 ,  E21D21/008 ,  F16B13/141 ,  F16B2013/008

摘要： An improved expansion assembly for a mine roof bolt has a tapered plug, two expansion leaves that bear against the tapered plug, a bail that connects the expansion leaves and extends over the end of the mine roof bolt, and a breakable holding ring to keep the expansion assembly assmebled until after it is placed into the bore hole. The tapered plug has a threaded bore therethrough for threading onto the mine roof bolt. The tapered plug also has tapered surfaces that have an angle of taper of 8.degree. to the axis of the mine roof bolt. The expansion leaves each have nine serrations formed on the surface such that the serrations are formed by the intersection of a planar surface perpendicular to the axis of the mine roof bolt and a frusto-conical surface. The frusto-conical surface is at an angle of 69.degree. to the planar surface. The serrations are equally spaced from each other and have a peak to peak distance of 0.25". The expansion leaves each have a maximum length of 3". The tapered plug has a relieved upper edge and channels running longitudinally along the outer surfaces of the legs of the plug and the expansion leaves have channels formed near the end of the leaves, all for facilitating use of the expansion assembly with resin. The improved expansion assembly may be utilized with or without resin bonding.

摘要翻译： 一种用于矿山屋顶螺栓的改进的膨胀组件具有锥形塞子，两个膨胀叶片，其抵靠锥形塞子，连接膨胀叶片并延伸在矿井顶部螺栓的端部上的吊环和可拆卸的保持环，以保持 膨胀组件被放入钻孔后。 锥形塞具有穿过其中的螺纹孔，用于穿过矿井顶部螺栓。 锥形插头还具有锥形表面，该锥形表面的锥度与矿井屋顶螺栓的轴线相差8°。 膨胀叶片各自在表面上形成九个锯齿，使得锯齿由垂直于矿顶车顶螺栓的轴线的平面和截头圆锥形表面的交点形成。 截头圆锥形表面与平面的角度为69°。 锯齿彼此相等间隔，并具有0.25“的峰到峰距离。 每个扩展叶片的最大长度为3“。 锥形塞具有缓和的上边缘和沿着塞子的腿部的外表面纵向延伸的通道，并且膨胀叶片具有靠近叶片端部的通道，所有这些都是为了便于使用具有树脂的膨胀组件。 改进的膨胀组件可以在有或没有树脂粘合的情况下使用。

公开(公告)号：US4913593A

公开(公告)日：1990-04-03

申请号：US264050

申请日：1988-10-28

申请人： Carl A. Clark ,  Raymond L. Wright

发明人： Carl A. Clark ,  Raymond L. Wright

IPC分类号： E21D21/00

CPC分类号： E21D21/008

摘要： A two-piece, malleable iron, expansion anchor for installation in a relatively small (about 1") diameter bore hole with a conventional size (5/8") bolt. The four-prong expansion shell, camming plug, and individual shell leaves each have unique features contributing to the effectiveness of the anchor when used either with or without a resin grouting mixture. The slots or spaces between adjacent shell leaves include upper and lower portions, each of constant width, the lower portion being wider than the upper portion, whereby the leaves are narrower in the area where they are bent outwardly from the closed ring at the base than in the area where they are compressionally engaged between the plug and the hole wall. Upper portions of the inner leaf surfaces taper toward the shell axis and the side edges of such surfaces taper toward one another from the upper, free ends of the leaves toward the lower ends. An axial rib extends outwardly from the surface of the camming plug over its entire length. A first group of gripping teeth or serrations on the outer leaf surfaces near the lower ends of the leaves are deeper than a second group outwardly adjacent the plug contact area.

摘要翻译： 一种双件，有韧性的铁，膨胀锚，用于安装在具有常规尺寸（5/8“）螺栓的较小（约1”）直径的钻孔中。 四爪膨胀壳，凸轮塞和单独的叶片叶都具有独特的特征，有助于在使用或不使用树脂灌浆混合物时锚固件的有效性。 相邻壳叶之间的槽或空间包括上部和下部，每个具有恒定的宽度，下部宽于上部，从而叶片在从底部的闭合环向外弯曲的区域中较窄， 在它们被压缩地接合在插头和孔壁之间的区域中。 内部叶片表面的上部朝向壳体轴线逐渐变细，并且这些表面的侧边缘从叶片的上部自由端向下端部逐渐变细。 轴向肋在其整个长度上从凸轮塞的表面向外延伸。 在叶片下端附近的外叶表面上的第一组夹持齿或锯齿形状比靠近插头接触区域的第二组更深。

公开(公告)号：US4904122A

公开(公告)日：1990-02-27

申请号：US226758

申请日：1988-08-01

申请人： Thomas Herbst ,  Lorenz Schnitzler

发明人： Thomas Herbst ,  Lorenz Schnitzler

IPC分类号： E21D20/00 ,  E21D21/00 ,  E21D21/02 ,  F16B31/02

CPC分类号： E21D21/0033 ,  E21D21/008 ,  E21D21/02 ,  F16B31/024

摘要： An anchoring device, such as a rock anchor, includes an anchor rod with force transmission ribs projecting outwardly from its outside surface. An anchor nut is in threaded engagement with the rod and has at least an axially extending portion formed of a material having lesser strength than the material of the rod. The anchor nut has at least two axially extending portions spaced apart by cuts through the nut, which cuts extend transversely of the nuts central axis. The portions follow one another in the central axis direction with at least the portion closer to the body into which the anchor rod extends having the lesser strength. The nut portions are dimensioned so that the portion closer to the body loses its force locking engagement with the ribs on the rod and its threads shear off when a predetermined load is exceeded. The nut portions are interconnected by narrow webs remaining after the cuts are made in the nut separating the portions. The webs cannot transmit the anchor force when the predetermined load is exceeded, and, therefore, they act as breaking points with the two portions moving toward one another and closing off the cuts. The closure of the cuts is visible and signals that the predetermined load has been exceeded, accordingly, steps can be taken to secure the stability of the body into which the anchoring device is inserted.

摘要翻译： 诸如岩石锚固件的锚定装置包括具有从其外表面向外突出的力传递肋的锚杆。 锚定螺母与杆螺纹接合并且具有至少一个轴向延伸部分，该部分由具有比杆的材料更小的强度的材料形成。 锚固螺母具有至少两个沿着螺母间隔开的轴向延伸部分，切口沿螺母中心轴线横向延伸。 这些部分在中心轴线方向上彼此相依，至少该部分更靠近主体，该锚杆延伸的主体具有较小的强度。 螺母部分的尺寸使得靠近主体的部分失去与杆上的肋的力锁定接合，并且当超过预定负载时，其螺纹被切断。 在分离部分的螺母中形成切口之后，螺母部分通过窄幅互连。 当超过预定载荷时，腹板不能传递锚定力，因此，它们作为断裂点，两个部分朝向彼此移动并关闭切口。 切割的闭合是可见的并且指示已经超过预定负载的信号，因此可以采取步骤来确保锚固装置插入其中的主体的稳定性。

公开(公告)号：US4861197A

公开(公告)日：1989-08-29

申请号：US62729

申请日：1987-06-15

申请人： Frank Calandra, Jr.

发明人： Frank Calandra, Jr.

IPC分类号： E21D21/00

CPC分类号： E21D21/0026 ,  E21D21/008

摘要： A mechanical anchor including an expansion shell and an expansion plug positioned in the shell is engaged with the end of a bar having helically extending rib segments formed on the outer surface of the bar. The expansion plug has an internal bore defining a wall having a configuration to receive and mate with the helically extending rib segments formed on the outer surface of the bar. The mechanical anchor and a portion of the bar are inserted in a bore hole drilled in a rock formation and, upon rotation of the bar in a preselected direction, the expansion plug nonrotatably moves down the bar to expand the shell into engagement with the bore hole wall. As the shell engages the bore hole wall, the bar is mechanically anchored within the bore hole by the mechanical anchor. If it is desired to combine mechanical and chemical anchoring of the bar within the bore hole, the expansion plug is provided with a displaceable stop means positioned in the expansion plug bore, and a curable, two component bonding material is positioned in the bore hole ahead of the mechanical anchor. The stop means permits initial rotation of the mechanical anchor and ribbed bar within the bore hole to mix the bonding material components before the expansion shell is expanded. In addition, various other embodiments of a bar having helically extending rib segments formed on the outer surface of the bar and anchored in a bore hole are disclosed herein.

摘要翻译： 包括膨胀壳和位于外壳中的膨胀塞的机械锚固件与形成在杆的外表面上的具有螺旋形延伸的肋段的杆的端部接合。 膨胀塞具有限定壁的内孔，该内壁具有接纳和配合形成在杆的外表面上的螺旋形延伸的肋段的构型。 机械锚固体和杆的一部分插入在钻岩中钻孔中，并且当杆沿预选方向旋转时，膨胀塞不可旋转地向下移动杆，以将壳膨胀成与钻孔接合 壁。 当外壳接合钻孔壁时，杆通过机械锚机械地锚固在钻孔内。 如果希望将杆的机械和化学锚定结合在钻孔内，则膨胀塞设置有位于膨胀塞孔中的可移位的止动装置，并且可固化的双组分粘合材料位于钻孔的前方 的机械锚。 止动装置允许机械锚和肋条在钻孔内初始旋转，以在膨胀壳膨胀之前混合粘合材料部件。 此外，本文公开了具有形成在杆的外表面上并锚定在钻孔中的螺旋形延伸的肋段的杆的各种其它实施例。

公开(公告)号：US4518292B1

公开(公告)日：1989-01-17

申请号：US49711383

申请日：1983-07-05

IPC分类号： E21D20/02 ,  E21D21/00

CPC分类号： E21D20/02 ,  E21D21/008 ,  Y10T29/49938

公开(公告)号：US4784530A

公开(公告)日：1988-11-15

申请号：US107258

申请日：1987-10-09

申请人： Stanley J. Price, Jr.

发明人： Stanley J. Price, Jr.

IPC分类号： E21D20/02 ,  E21D21/00

CPC分类号： E21D21/008 ,  E21D20/025

摘要： The apparatus for anchoring a bolt includes an elongated bolt with a threaded portion located at a preselected position along the length of the bolt and spaced from the end portions of the bolt. An expansion shell assembly is positioned on the bolt with the camming plug portion threadedly secured to the bolt threaded portion so that the expansion shell assembly is positioned in spaced relation to the ends of the bolt. In one embodiment, the threaded portion of the bolt includes a threaded sleeve suitably secured to the bolt at a location between the end portions of the bolt. In another embodiment, the bolt has a threaded portion located between the unthreaded end portions and a C-shaped stop member is secured on the lower portion of the threads. A camming plug is formed in longitudinal halves that are positioned around the threaded portion of the bolt and held in place by the fingers of the expansion shell assembly. A method is also disclosed where the threaded portion of the bolt is located at a preselected location between the ends of the bolt and the expansion assembly is threadedly engaged to the threaded portion of the bolt at the preselected location and is expanded to engage the bore hole at that location. A chemical bond may also be employed to engage another portion of the bolt to the bore hole.

摘要翻译： 用于锚定螺栓的装置包括细长螺栓，其具有螺纹部分，螺纹部分位于螺栓长度的预定位置处并与螺栓的端部间隔开。 膨胀壳体组件定位在螺栓上，凸轮塞头部分螺纹固定到螺栓螺纹部分，使得膨胀壳体组件与螺栓的端部间隔开。 在一个实施例中，螺栓的螺纹部分包括在螺栓的端部之间的位置处适当地固定到螺栓的螺纹套筒。 在另一个实施例中，螺栓具有位于无螺纹端部之间的螺纹部分，并且C形止动件固定在螺纹的下部。 凸轮塞形成在纵向半部中，其定位在螺栓的螺纹部分周围，并通过膨胀壳组件的手指保持就位。 还公开了一种方法，其中螺栓的螺纹部分位于螺栓的端部之间的预选位置处，并且膨胀组件在预选位置处螺纹地接合到螺栓的螺纹部分并且膨胀以接合钻孔 在那个地方。 也可以使用化学键来将螺栓的另一部分接合到钻孔。

公开(公告)号：US4753559A

公开(公告)日：1988-06-28

申请号：US39814

申请日：1987-04-14

申请人： Walter J. Pentesco

发明人： Walter J. Pentesco

IPC分类号： B21D35/00 ,  B21D53/46 ,  E21D21/00 ,  F16B13/06

CPC分类号： B21D35/00 ,  B21D53/46 ,  E21D21/008 ,  F16B13/063

摘要： An expansion shell is formed from a single piece of sheet metal consisting of two spade-shaped leaves connected by a narrow portion which becomes the bail. The leaves are corrugated along their transverse axes so as to form a series of undulations of increasing amplitude and the leaves are formed into semi-cylinders. The corrugated semi-cylindrical leaves are centrally slotted along their longitudinal axes so as to form four leaf segments. The corrugated leaf segments are then compressed along their longitudinal axes so as to cause the undulations to form a tapered pleated metal fold, wherein the crests of the undulations become semi-cylindrical ridges capable of gripping the rock formation.

摘要翻译： 膨胀壳由单块片状金属片形成，该片状金属片由两个由形成吊环的狭窄部分连接的铁锹形叶片构成。 叶片沿着它们的横向轴线是波纹状的，从而形成一系列增加幅度的起伏，叶片形成半圆柱体。 波纹半圆柱形叶片沿其纵向轴线中心开槽，以形成四个叶片段。 然后将波纹状叶片沿其纵向轴线压缩，以使波纹形成锥形褶皱金属折叠，其中波纹的波峰变成能够夹持岩层的半圆柱形脊。

公开(公告)号：US4662795A

公开(公告)日：1987-05-05

申请号：US612848

申请日：1984-05-22

申请人： Carl A. Clark ,  John Rogala

发明人： Carl A. Clark ,  John Rogala

IPC分类号： E21D20/02 ,  E21D21/00 ,  F16B31/02

CPC分类号： E21D20/025 ,  E21D21/008 ,  F16B31/02

摘要： A nut element having a frangible portion for use with an elongated bar having an upper end anchored by a resin material within a drill hole in a mine roof, or the like, and a lower end extending outside the hole and threaded to receive the nut element of the invention. The nut includes a portion spaced from the threaded opening which limits relative rotation of the nut and bar. Thus, rotation of the nut with the lower end of the bar contacting the rotation-limiting portion thereof serves to rotate the bar within the drill hole, causing the upper end of the bar to rupture a conventional two-compartment resin cartridge and mix the contents thereof. When the resin has hardened to hold the bar stationary, excess torque applied to the nut serves to break the rotation-limiting portion thereof, preferably a dome-shaped cap with an opening of smaller diameter than the threaded end of the bar, allowing the nut to be snugly secured against a roof support plate and tension the resin-anchored bar.

摘要翻译： 一种螺母元件，其具有与细长杆一起使用的易碎部分，所述细长杆具有通过矿井顶部的钻孔内的树脂材料锚固的上端等，以及延伸到所述孔外部并被螺纹接收所述螺母元件的下端 的本发明。 螺母包括与螺纹开口间隔开的部分，其限制螺母和杆的相对旋转。 因此，螺母与杆的接触其旋转限制部分的下端的旋转用于使杆在钻孔内旋转，导致杆的上端破裂常规的两室树脂筒并将内容物 其中。 当树脂硬化以将杆保持固定时，施加到螺母的过大扭矩用于使其旋转限制部分，优选地具有比杆的螺纹端小的开口的圆顶形盖，从而允许螺母 紧贴在屋顶支撑板上并张紧树脂锚定杆。