CN2071705U

CN2071705U - Wood anchored reusable type metal anchor botl

Info

Publication number: CN2071705U
Application number: CN 90205927
Authority: CN
Inventors: 林富明
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-04-05
Filing date: 1990-04-05
Publication date: 1991-02-20

Abstract

The utility model relates to a wood anchored reusable metal anchor bolt which is suitable for underground mining and tunnel engineering support, belonging to a mechanical anchor bolt for anchoring in end head anchor class. The wood anchored reusable metal anchor bolt is characterized in that one end of a left anchor bolt is a pointed end, the other end of the left anchor bolt forms a circular shape, and an annular groove and an inverse ratchet are arranged at the bolt near the pointed end. The anchor bolt is matched with shim plates and round timbers to support rock layers. The wood anchored reusable metal anchor bolt has the advantages of simple processing, low cost, high recovering rate, etc.

Description

Wood anchored reusable type metal anchor botl

The utility model relates to a kind of underground mining that is used for, and satisfies the anchor pole of shaft and drift supporting in the engineering of hole, more properly says it is a kind of wooden anchoring recovery type anchor metal.

Since the use anchor pole is at first invented by in 1910 U.S., existing multiple various anchor pole, these anchor poles are broadly divided into two classes, and a class is disposable anchor pole, such as the anchor pole of doing the anchoring agent with resin or rapid setting cement.Another kind of is the recoverable anchor pole, as falling wedge-type and expansion type rock bolt.Callable purpose is recycling, reduces production costs, but owing to be subjected to the restriction of concrete construction environment, inverted wedge type anchor rod can not reclaim substantially, and expansion type rock bolt and be to reclaim also can only reclaim 1/3rd the body of rod of its a whole set of anchor pole, and same waste is bigger.

The purpose of this utility model is that a kind of recoverable anchor pole is provided, and under the prerequisite of the superiority that can embody existing anchor pole and its support action of realization, makes it can reclaim recycling as much as possible when concrete the use.The utilization strength of wood is generally less than the principle of the intensity of metal steel, makes timber as middle the Jie thing of anchor metal with bolthole, make anchor pole can firm attachment in bolthole, can when applying external force, can extract anchor pole again so that recycling.

The purpose of this utility model is to realize like this, make an end with steel bar tip is arranged, it is 1.5～2.5m that the other end is circular its length overall of anchor pole, and it is porose to make the center with steel plate, and size is not less than the backing plate of 150 * 150mm, plate thickness is 6～10mm, the backing plate central hole size equates with bolt diameter or greater than 2～3mm, round log can be a common wood, also can be that compressed wood is made, its diameter is less than or equal to the bolthole diameter, and length is long less than bolthole.The installation of the wooden anchoring recovery type anchor metal of being made up of anchor pole, backing plate, round log is that the anchor pole tip passes the backing plate centre bore, round log is inserted the anchor pole aperture, withstand the round log center with the anchor pole tip, push round log at the bottom of the bolthole and anchor pole is clamp-oned round log, make backing plate be close to scar with external force.The utility model only needs to tie down annulus that anchor pole exposes with wire rope and executes external force it is extracted recovery when reclaiming.

Below by embodiment, in conjunction with the accompanying drawings the utility model is done into description.

Fig. 1 is the utility model user mode schematic diagram.

A bolthole 6 is made a call at the place in needs supporting rock stratum, its degree of depth is greater than the length of anchor pole 1, anchor pole 1 passes backing plate 2 centre bores 5, its tip withstands in the round log 3 at place, bolthole 6 apertures, the annulus 7 of anchor pole 1 is knocked at the center with iron hammer or hammer drill, round log 3 is pushed bolthole 6, simultaneously anchor pole 1 is clamp-oned round log 3 and made backing plate be close to rock stratum face 8 again.For increasing the adhesive power of anchor pole 1 in round log 3,1 tip place is processed with annular groove or barb 4 at anchor pole.When reclaiming, steel cable is tied down anchor pole 1 annulus 7, pull out at a distance with instruments such as winch, cucurbits and draw, can extract recovery.

It is simple to the utlity model has manufacturing process, and cost is low, rate of recovery high.

Claims

1, the formula anchor metal is received in wooden anchoring, an end that it is characterized in that anchor pole is a tip, it is circular that the other end is, there is a center-hole diameter to be slightly larger than the backing plate of bolt diameter, the anchor pole tip passes the outer power in backing plate hole and clamp-ons the interior length of bolthole less than bolthole, diameter is less than or equal in the round log of bolthole diameter, makes backing plate be close to scar, and anchor pole annulus card pressure pad plate and work draw ear when reclaiming.

2, anchor pole as claimed in claim 1 is characterized in that anchor pole made by steel, near the bar portion at tip position annular groove or barb is arranged.

3, anchor pole as claimed in claim 1 or 2 is characterized in that rock-bolt length is less than the bolthole degree of depth.

4, anchor pole as claimed in claim 1, its feature are that also backing plate is a metal caul.

5, anchor pole as claimed in claim 1 is characterized in that round log can be a common wood, also can be that compressed wood is made, its diameter and bolthole equal diameters.