|
IPC classes for russian patent Lockless anchor (RU 2504659):
Another patents in same IPC classes:
 Damaged ampoule with water-containing mineral filler for fixation of anchor in hole / 2495248
Damaged ampoule with a water-containing mineral filler for fixation of an anchor in a hole, comprises a damaged body with a mineral component and a damaged capsule containing a water component, the length of the damaged capsule corresponds to the length of the damaged body. The damaged capsule comprises a hydrating component made in the form of a porous inert non-compressible mineral component or a mixture of components, impregnated with an aqueous solution or water, and the damaged body is filled with a hydrated mineral component or a mixture of mineral components, besides, in any cross section of the ampoule there is a permanent ratio of masses of hydrated and hydrating components.
 Anchor from composite material / 2494255
Anchor from a composite material comprises a load-carrying rod with periodical profile of side surface of helical shape, a facility for fixation in a borehole in the form of a wedge-spacing lock and a spacing wedge, a spacing wedge placed on it from a composite material, at the same time the spacing wedge is made in the form of a truncated cone with a central channel and a through longitudinal slot, the inner surface of the channel is made in the form of a periodical profile of helical shape, which follows the profile of the side surface of the load-carrying rod, and the spacing wedge is screwed onto the load-carrying rod, the spacing bushing is made in the form of a cylinder with a channel of conical shape, separated with two longitudinal slots into segments connected by links, and the facility of fixation with the support elements includes a support orifice with a nut, besides, the nut is made of a composite material with the thread profile corresponding to the profile of the side surface of the load-carrying rod.
 Spacing anchor / 2490470
Spacing anchor comprises a hollow cylindrical vessel, a spacing lock installed on it in the form of rotary cams, a stem with a tail for a rotation drive installed inside the vessel, a support slab and a tension nut, according to the invention, it is equipped with a drilling crown fixed at the end of the stem at the opposite side to the tail, at the same time the support slab and the tension nut are installed on the vessel, the diameter of the blast hole arranged with the drilling crown is equal to the external diameter of the body, the stem is installed in the body with a gap providing for chippings discharge, and the rotation drive is made in the form of a drilling unit.
 Method of producing anchor rod reinforced by fiber / 2486059
Invention relates to production of plastic anchor bolt used for rib control. Proposed method comprises drawing continuous fiber threads via bath filled with resin into mould with stationary bottom die and displacing top heated die. Note here that multiple inner and outer reinforcing threads are drawn into open die to twist them so that, at least, outer fibers are located, mainly, in spiral line. Then, die is closed to form the bolt by drawing and pressing.
 Anchor support for mine workings / 2484251
Anchor support for mine workings includes a bar with grooves and elastic members, a support plank and a tension nut, which are arranged on the bar end projecting into the working-out. The bar is equipped with an internal channel. Elastic members are made in the form of closed elastic covers installed in the bar grooves hydraulically or pneumatically connected to the internal channel of the bar, which is sealed with a plug or a valve.
 Mine barrier / 2471992
Mine barrier comprises a net fixed on a massif with anchors, each threaded rod end protruding from the well of which crosses the net within its cell and is equipped with a washer with a central hole and a nut, pressing the net to the massif surface. The net is made of tapes by means of their welding in nodes of crossing along the entire area of tapes application above each other. Each tape is made from plastic and comprises steel wires extended along the tape. A gasket is arranged between the washer and the net with a central hole, which is made from an elastic material, and its dimensions provide for prevention of net contact with a washer along its perimetre. In the place of net pressing the surface of the massif is polished, and between the net and the surface of the massif there may be an additional gasket arranged from an elastic material and with a central hole for an anchor rod.
 Anchor bolt with mechanical anchor / 2470158
Proposed group of inventions refers to mining operations, and namely to anchor bolts to support the roof and walls at tunnel construction. Anchor bolt includes a shaft and anchor device containing a mandrel and at least one expanding element covering the mandrel. Besides, at least one mandrel or at least one expanding element are made so that they can be rotated about the shaft and can move axially along it. At least one expanding element is made so that it can be displaced radially outwards with specified relative movement between mandrel and at least one expanding element. Besides, shaft includes the first and the second sections to arrange the moving element. When the arrangement is performed in the first section of the shaft, rotation of the moving element relative to the shaft causes the axial movement of that element along the shaft, and when the arrangement is performed in the second section of the shaft, the moving element is installed with possibility of being rotated on the shaft without deviation with axial movement along the shaft.
 Hollow anchor bolt, self-drilling anchor bolt and method to shape hollow anchor bolt / 2458226
Self-drilling anchor bolt comprises a hollow rod of a helical profile (12), a setting end (26) and an opposite drilling end (28). The angle of anchor rod threading profile is between 30° and 60°. At the same time the setting end has a setting thread (27) to ensure engagement of the anchor bolt with the drilling device, and the drilling end comprises a fastening thread (24) to install an anchor device (25). Besides, setting and fastening threads have a pitch, profile and/or direction differing from the pitch, profile and direction of the anchor rod helical profile.
 Self-drilling anchor bolt and anchor device for it / 2454543
Self-drilling anchor bolt contains first and second ends, shaft provided with axis and located between the ends and anchor device being arranged along the first part of shaft close to the first end and provided with female thread interacting with male thread of shaft. At that the first end of anchor bolt is provided with drill bit and limit stop to restrict rotation of anchor device on shaft to support anchor device in free threaded connection on shaft during drilling. Limit stop contains connected support surfaces, one of them is located on drill bit, the other is on shaft, at that each support surface is formed by at least one upward-projecting wall.
 Roof bolt locked by firing / 2451182
Roof bolt locked by firing consists of two interconnected pipe pieces and guiding element with oval bottom and unit with ideal cable attached at the oval bottom of guiding element. At the areas of pipe pieces connection one pipe piece has internal cone, the other - external cone that are interconnected by means of external cone installation into the internal one. Along the length of tubular anchor at the cylindrical areas of pipe pieces there are "П"-shaped slots cut with the possibility to bend the "tongues" of "П"-shaped slots in the opposite directions under gas pressure at explosion of detonating cord.
 / 2244831
 / 2258812
 / 2273737
 / 2280166
 / 2281398
 / 2282032
 / 2287690
 / 2292459
 / 2298101
 / 2303696
|
FIELD: mining.
SUBSTANCE: lockless anchor includes a rod with a shank, an additional rod and a support plate, a washer and a tension nut, which are installed on the shank. Rods are flexible and installed at an angle to mining surface. Besides, rods are directed crosswise to each other. Rods are braced by their tightening through the washer with the tension nut till the support plate is tightly pressed to the rock.
EFFECT: obtaining a structure of an anchor that is convenient for its installation and removal, which is necessary for its multiple use.
2 dwg
The invention relates to the fastening of mines, namely the anchor supports.
Closest to the claimed invention to the technical essence is lockless anchor (see SU 1601384, E21D 21/00, 1990), including the rod shank and mounted on the shank of the anchor plate, washer and clamping nut, characterized in that to reduce installation time and removing the anchor, the shank of the rod bent at an acute angle in the direction of its longitudinal axis and on the surface of the rod has a reference plots with notches, one of which is located close to the limb with his hand, and the other diametrically with respect to the first area of the deep end of the rod, with washer made oblique, and the base plate with thrust cylindrical protrusion, placed obliquely on the inner surface of the plate, and the angle of the limb shank equal to
where fTrthe coefficient of friction of the rod on the breed;
l is the length of the rods to the place of the limb shank, m;
d - the distance from the limb to the center of the adjacent section with notches, M.
The disadvantage of this design anchor lining is that, despite a relatively high carrying capacity, the need to expand the mouth of each hole for limb shank rod significantly increase the characteristic complexity of the work and does not contribute to reduce the time of installation of the anchor.
Task to be solved by the claimed invention is directed, is expressed in the creation of anchor simplified design that provides reliable fastening mining without the use of additional fastening devices.
The technical effect obtained by the solution of the problem, expressed in the design of the anchor, easy to install and retrieve necessary for its repeated use.
To solve the problem lockless anchor comprising a rod shank and mounted on the shank of the anchor plate, washer and clamping nut, characterized in that in order to simplify the design of the lining and increase the area of the array that is supported by the anchor includes an additional rod, this rod is flexible and is installed at an angle to the surface of the working, cross each other, and the thrust rod is provided by screwing through the washer tension nut until it is firmly pressing the support plate to the breed. In addition, to enhance the adhesion of the rod in the hole the surface of the rods are made of ribbed.
Comparative analysis of the characteristics of the claimed solution with features analog demonstrates compliance of the claimed solution to the criterion "novelty".
The set of features of the invention provides a solution to the stated technical problem, namely, the establishment is a reliable and convenient mine timbering using anchors are not complex structures.
The claimed device is illustrated in the drawings, in which figure 1 schematically shows the anchor is installed in the borehole, figure 2 - base plate with welded on the rod with external thread, the tension nut and washer special form.
Lockless anchor consists of two flexible rods 1. On the outer part of the rod mounted base plate with welded on the rod with external thread 2 and the openings for the rods, washer special forms 3 and the tensioning nut 4. Before installing anchor drill two hole at an angle to the surface of the breed, however, they aimed the crosshairs at each other. After entry of the anchor into the holes on the rod set the support plate 2 and the washer 3. Next, produce a thrust anchor by tightening the tension nut 4 to tightly pressed base plate to the breed. To retrieve the anchor loosen the tension nut 4, which gives the opportunity to straighten the flexible rod and quickly to remove them from the hole.
The claimed solution has the following distinctive features:
the fastening is made in the form of two flexible rods that are installed at an angle to the surface of the rock, and aimed the crosshairs at each other;
a thrust rod is provided with tensioning nut over the washer special form to tightly pressed base plate to the breed;
- to enhance the adhesion of the rod with a rock in the hole they made with the Rebbe the East surface;
- when attaching the rock mass anchors of the proposed design is not affected by the nature of their relationship, as the anchor of the claimed design creates a uniform distribution of stresses and contributes to the damping of the shear deformation.
A specific example. Rocks - Sandstone density γ=25,5 kN/m3and the strength coefficient on Protodyakonov f=6. The radius of the cross-section of the rod R=0,021 m the Depth of penetration of the anchor into the rock h=0,02 m bar Length L=1.0 m, the Angle α anchor. The coefficient of friction of the rod on the breed fTr=0,4. The angle α productionabout=0°. Parameter approximations for specific types of rocks, determined experimentally, A=1,8·9,81 N/m2.
Defined S - the area of contact of the anchor with the breed:
Find the magnitude of the normal force N:
Bearing capacity of the anchor is determined by the formula
P=N(fTr·cosα+sinα), kH
At α=30°:
P=214(0,4·cos30°+sin30°)=181,13 kH
Determine the area of the roof (F)supported by a single anchor, according to the formula:
At α=30°:
Assume that the distance between the rows of anchors specified, Ly is 1.5 meters Then the distance between the anchors is located is as follows:
The angle of the hole is found from the relation:
1. Lockless anchor comprising a rod shank and mounted on the shank of the anchor plate, washer and clamping nut, characterized in that it includes an additional rod, this rod is flexible and is installed at an angle to the surface of the production, directed cross each other, and the thrust rod is provided by screwing through the washer tension nut until it is firmly pressing the support plate to the breed.
2. Lockless anchor according to claim 1, characterized in that the surface of the flexible rod is ribbed.
|
