SU1446330A1 - Device for setting roof bolts - Google Patents

Abstract

The invention relates to the fastening of mined workings and reduces the laboriousness of installing anchors, on the protruding end of the tension nuts. The device includes a housing (K) 1 with a central groove 13 and a jamming device. The latter is made in the form of a spring-loaded disc 7 and pushers (T) 8 with wedge-shaped tips 9. They are installed in K 1 with the possibility of

Description

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and with spacers (W) 10. In the lateral projections 2 K 1 to accommodate W 10, there are transverse coaxial holes. Moreover, K 1 is closed by a lid 3, through which a cylindrical shank 3 with a key 5 is passed. A groove 13 is mated with holes and is intended to accommodate a tension nut 14 of an anchor 15 when it is installed with a possibility of contacting with Sh 10. A device with a groove 13 is installed on the nut 14 of the anchor 15 and, having attached to the drill, report

axial force. Under the action of the latter, the T 8 moves and squeezes the W 10 into the groove 13. As a result, the W 10 contact with the nut 14. When the device rotates, the nut 14 is screwed onto the anchor 15 all the way into the protruding W 10. After that, the anchor 15 begins to rotate and breaks the cartridge in the hole. with the idle After removing the axial force T 8 by the springs 6, they return to their original position, and W 10 are sunk in K 1. The device is released from engagement with the anchor. 3 il.

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The invention relates to the fastening of mine workings, namely to devices for installing anchors.

The purpose of the invention is to reduce the laboriousness of installing anchors having a tensioning end on the protruding end.

FIG. 1 shows a device for installing anchors in the initial (inoperative) position; in fig. 2 - the same in the working position; in fig. 3 shows section A-A in FIG. 2

The device for installing anchors consists of a housing 1 with protrusions 2, a cover 3, a cylindrical shank 4 with a key 5 and a jamming device placed inside the housing 1, which is made in the form of a disk 7 spring-loaded with springs 6 and pushers 8 with wedge-shaped tips 9 installed in housing 1 with the interaction with the spacer balls 10. The protrusions 2 are provided with transverse coaxial holes 11 for accommodating the spacer balls 10 and the axial hole 12. In the center of the housing 1 is made mating with the transverse 11 and an axial hole 12, a groove 13 for placing the tension nut 14 of the anchor 15 in it, with the possibility of contact with the spacer balls 10. When installing the anchor outside the hole 11, they are closed with screw plugs 16.

The device for the installation of anchors works as follows

In the original. (Non-working) position, the disk 7 under the influence of the force of

At its lower end, the gin 6 is pressed against the roof 3. The wedge-shaped tips 9 of the pushers 8 are completely withdrawn from contact with the expansion balls 10, which in this position can come into contact with each other.

Before installing the anchor 15 in the hole device shank 4 with a key 5 is installed in the drive socket

drill bit (not shown). one

The device is then fitted with a groove 13. in the housing 1 onto the nut 14 of the anchor, and its free end partially comes in and is centered in the axial bore 12 of the housing 1. The nut 14 rests on the base of the groove. Next, the shank 4 is reported to have an axial force P, under the action of which it, together with the disk 7 and the pushers 8, moves in the axial direction. When this wedge-shaped tips 9 pushers 8 squeeze the balls 10 into the groove 2-2.5 mm. Then a drill bit is turned on, which transmits the torque through the shank 4 to the entire device. The nut 14 is screwed onto the end of the anchor 15 all the way into the protruding balls, which further ensures the joint rotation of the device and the anchor 15 necessary for length. Destruction of a cartridge in the borehole with a mortar designed to secure the anchor in the bore-hole.

After removing the axial force from the shank 4, the disc 7 is pushed against the cover 3 by the action of the springs 6 and leads the pushers 8 out of interaction with the balls 10, while

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Editor A. Kozorie

Compiled by B.Usan-Podgornov

Tehred L. Oliynyk Proofreader E. Lonchakova

Order 6728/39

Circulation 459

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5

Production and printing company, Uzhgorod, st. Project, 4

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Claims (1)

Claim A device for installing anchors, comprising a housing, a cover, a cylindrical shank with a key and a jamming device with spacer balls located inside the housing, characterized in that, in order to reduce the complexity of installing anchors having tension nuts on the protruding end, the jamming device is made in the form of a spring-loaded disk and a sense of ⁵ bodies with wedge-shaped tips installed in the housing with the possibility of interaction with spacer balls, while the housing has lateral protrusions in which The transverse coaxial holes for placement are filled. there are spacer balls in them, and in the center of the body there is a groove mating with the holes for placement in it, an anchor tension nut with the possibility of 1 e contacting with the spacer balls when installing the anchor. l-l Figz