CN2161730Y

CN2161730Y - Multi-section anchoring-bolt fastening device

Info

Publication number: CN2161730Y
Application number: CN 93202057
Authority: CN
Inventors: 成恒棠; 张仁贵; 林柏泉
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-19
Filing date: 1993-01-19
Publication date: 1994-04-13
Anticipated expiration: 2003-01-19

Abstract

The utility model relates to a multi-section anchoring and fastening device mainly used for anchoring and fastening support of mine lanes and the aspects of suspension of belt conveyers and vehicle stabilized basis. The device is composed of end head anchoring agents, rod bodies, a middle filling agent, supporting plates and nuts. The end head anchoring agents are respectively arranged on the upper part and the lower part of the device, the middle filling agent is arranged in the middle part. The head anchoring agents and the middle filling agent form hollow cylinders. The rod bodies are inserted in the hollow cylinders above which supporting plates are arranged, screwing by nuts. The utility model has the advantages of simple structure, convenient installation and large anchoring and fastening force.

Description

Multi-section anchoring-bolt fastening device

The utility model relate to a kind of can be in fissuted medium the device of Bolted Rock Masses, be mainly used in the mine laneway anchoring support, also can be used for shaft equipment the sub-anchoring of bracket, belt conveyer is hung and the anchoring of the parties concerned such as vehicle stabilizing base.

In mine laneway, the surrounding rock supporting mode can be divided into two classes usually at present, and first tradition support pattern comprises country rock block arch, metallic support, timbering, though this support pattern supporting capacity is big, and supporting expense height.It two is bolt-spary supportss, comprises end anchorage supporting (as resin anchor and cement grouted bolt) and full anchoring support (as pipe-seam type anchor rod).The resin anchor cost is higher.The cement grouted bolt cost is lower, but most cement anchoring agent need mix Admixture, and its uniformity is relatively poor, and anchored force is difficult for assurance, and mixes the cement of Admixture, and later strength has the retraction phenomenon, can not guarantee the steady growth of longterm strength.Though pipe-seam type anchor rod is full anchor supporting, cost is higher, and its anchored force is to rely on expansion of metal to realize that with the mutual friction mutually that hole wall produces anchored force is generally about 5 tons, and requires lithology to get well.

The reliable supporting of country rock body in the mine laneway, it is the important foundation of guaranteeing that mine safety is produced, because the mine laneway engineering quantity is big, so supporting expense and maintenance cost are also quite high, in order to ensure supporting quality, can reduce the supporting expense again greatly and reduce maintenance cost, the purpose of this utility model is exactly that a kind of multisection type anchor device fast, that cost is low, adhesion stress is strong, anchored force is big that solidifies will be provided.

The purpose of this utility model is achieved in that this anchor device is made up of end anchorage agent (1), the body of rod (5), middle filler (2), supporting plate (3) and nut (4) five parts.The upper and lower of this device has an end anchorage agent (1) respectively, end anchorage agent (1) is hollow garden cylindricality, the inwall of garden post is one deck wire gauze or nylon yarn, outer wall is one deck paper, the anchoring agent is housed between inside and outside wall, and the anchoring agent is mixed by cement (40-50%), accelerating admixture (5-10%), expansion agent (10-20%), calcium chloride (3-8%), dry powder water glass (10-20%), calcite filler (20-30%).The body of rod (5) is garden steel or screw-thread steel.Filler (2) in the middle of the middle part has one, middle filler (2) is hollow garden cylindricality, and the inwall of garden post is one deck paper, and outer wall also is one deck paper, and filler is housed between inside and outside wall, and filler is modified asphalt material or modifying water glass material.

Internal diameter, the external diameter of end anchorage agent and middle filler are identical, and external diameter is all less than bore diameter 1-2mm, and internal diameter is all greater than body of rod diameter 0.5-1mm.The body of rod and end anchorage agent and middle filler are matching used, so the specification of end anchorage agent and middle filler is decided by the diameter and the length of the bore diameter and the body of rod.

The utility model has the advantages that:

1, this anchor device is reasonable in design, and is simple in structure, easy for installation, safe and reliable.

2, adopt by three sections full anchor devices of forming, adhesion stress is strong, and anchored force is big, can adapt to the relatively poor rock mass of lithology.

3, solidify soon, the anchoring agent has dilatancy and acid resistance.

4, applied range not only is used for anchor pole country rock body, can be used for also that belt conveyer is hung, the anchoring of the parties concerned such as bracket of shaft equipment and vehicle stabilizing base.

5, raw material sources are extensive, and low price is easy to promote.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is a multisection type anchor device schematic diagram (Figure of abstract).

Among the figure: the 1st, the end anchorage agent; The 2nd, middle filler; The 3rd, supporting plate; The 4th, nut; The 5th, the body of rod.

During use, perforating in rock mass earlier, bore diameter is generally 36-42mm, the rock mass of boring length anchoring according to actual needs and deciding is generally 1.35-1.6 rice, puts into the body of rod 5 then, and put into an end anchorage agent (1), smash tightly, before the end anchorage agent is used, should put into earlier and contain early strength admixture solution and soak, put into rock mass after the taking-up immediately, filler (2) in the middle of putting into one again, and then put into an end anchorage agent (1), smash tight, set up supporting plate (3) or other device at last according to actual needs, fastening nut (4), anchored force can be greater than 2 tons after 1 hour, and anchored force will be greater than 7 tons after 1 day.

According to actual needs, end anchorage agent and middle filler also can be made other shape.

Claims

1, a kind of multisection type anchor device, the body of rod (5), supporting plate (3) and nut (4) are arranged, it is characterized in that: the upper and lower of this device has an end anchorage agent (1) respectively, and end anchorage agent (1) is hollow garden cylindricality, and inwall is a yarn, outer wall is a paper, the anchoring agent is housed between the inside and outside wall, filler (2) in the middle of the middle part has, middle filler (2) also is hollow garden cylindricality, inwall, outer wall all are paper, and filler is housed between the inside and outside wall.

2, according to the described multisection type anchor device of claim 1, it is characterized in that: internal diameter, the external diameter of end anchorage agent and middle filler are identical, and external diameter is all less than bore diameter 1-2mm, and internal diameter is all greater than body of rod diameter 0.5-1mm.