CN2400573Y

CN2400573Y - Two-way screw anchor rod

Info

Publication number: CN2400573Y
Application number: CN 99222052
Authority: CN
Inventors: 代进
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-18
Filing date: 1999-08-18
Publication date: 2000-10-11
Anticipated expiration: 2009-08-18

Abstract

The utility model provides a novel two-way spiral anchor bolt for supporting and protecting anchor bolts in mines. Spiral directions of transverse bars on an anchoring section (1) and a fastening section (2) are opposite, and longitudinal bars are eliminated. When the novel two-way spiral anchor bolt is used, anchoring agents can be pressed to the eye bottom of an anchor eye effectively. When the utility model is used for anchoring, the utility model has the characteristics that the compactness of the anchoring agents on the eye bottom of the anchor eye is improved and the cementing property to wall rocks is enhanced so as to support and protect surrounding rocks better.

Description

The bidirectional screw anchor pole

The utility model is the support anchor rod that is used for mine laneway supporting country rock.

At present, one of method of China's mine laneway supporting country rock is with anchor rod anchored, promptly stamps the anchor eye on country rock, puts anchoring agent (as resin etc.), anchor pole in the eyes at anchor, after the anchoring agent is solidified, anchor pole and country rock is glued together.And the anchor pole that uses is generally screw-thread steel for building, or be squeezed into the anchor pole of spiral lamination with garden steel processing, the anchoring of these anchor poles is consistent with the hand of spiral of fastening part partly, and vertical rib is arranged all, high vertical rib is arranged, low vertical rib is also arranged, when anchoring, have the deficiency of two aspects like this, the one, when fastening anchor pole, be unfavorable for that the anchoring agent pushes anchor eye eyeground to, make anchoring anchoring agent partly loose, be unfavorable for the splicing of anchor pole and country rock hole wall scar, the 2nd, anchor pole exists vertical muscle, mostly be high vertical rib in the past, now also having partly is low vertical rib, and vertical muscle hinders the stirring of anchoring agent.

For overcoming above-mentioned shortcoming, the utility model provides a kind of anchor pole of novel bidirectional screw, and it can press to the anchoring agent anchor eye eyeground effectively, strengthens the compactness of anchored end anchoring agent, thereby strengthens the cementing property with country rock hole wall scar, supporting country rock better.

The purpose of this utility model is achieved in that 1, the anchoring section (1) of anchor pole and the opposite (see figure 1) of the hand of spiral of the horizontal bar on fastening section (2).As, when fastening section (2) adopted right hand helix, then anchoring section (1) was left-handed spiral.2, do not establish vertical muscle on the anchor pole.Like this when skyhook stirs the anchoring agent, the direction of rotation of anchoring section (1) horizontal bar is opposite with fastening (2), just in time stirring the anchoring agent pushes to anchor eye eyeground, and not vertical muscle on the anchor pole, reduce the resistance that stirs the anchoring agent, improved the compactness of anchor eye eyeground anchoring agent, improved anchoring effect, and lighter when installing, saved the anchor pole material.

Several embodiment of the present utility model:

Example 1 (as Fig. 1): to be left-handed, fastening section (2) be dextrorotation (fastening section (2) employing of general use habit dextrorotation) to anchoring section (1), the horizontal bar of anchoring section (1) and fastening section (2) all adopts standard thread, anchoring section (1) is identical with the diameter of fastening section (2), all not vertical muscle.

Example 2 (as Fig. 2): anchoring section (1) is left-handed trapezoidal thread, and fastening section (2) are the dextrorotation trapezoidal thread, and vertical muscle (as Fig. 5, Fig. 5 is the lateral view of Fig. 2) is not all established in anchoring section (1) and fastening section (2).

Example 3 (as Fig. 3): anchoring section (1) is left-handed standard thread, and fastening section (2) are the dextrorotation trapezoidal thread, all do not establish vertical muscle.

Example 4 (as Fig. 4): anchoring section (1) is left-handed standard thread, and fastening section (2) are dextrorotation crescent screw thread, all do not establish vertical muscle.

Because the horizontal bar hand of spiral of anchoring section of the present utility model (1) and fastening section (2) is opposite, and do not establish vertical muscle, when using the utility model, help anchoring section (1) stirring anchoring agent and push to anchor eye eyeground, do not indulge the obstruction of muscle again, make the anchoring agent more closely knit.Therefore, the utlity model has when anchoring, improved the compactness of anchor eye eyeground anchoring agent, also just improved the cementing property of anchor pole and wall rock, thus the characteristics of supporting country rock better, and use lightly, saved the anchor pole material.

Claims

A kind of bidirectional screw anchor pole that contains anchoring section (1), fastening section (2) is characterized in that saidly having two:

The one, the hand of spiral of the horizontal bar on anchoring section (1) and fastening section (2) is opposite;
The 2nd, do not establish vertical muscle on the anchor pole.