CN2208100Y

CN2208100Y - Expanded plastic-steel pin

Info

Publication number: CN2208100Y
Application number: CN 94246032
Authority: CN
Inventors: 李永和
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-19
Filing date: 1994-11-19
Publication date: 1995-09-20
Anticipated expiration: 2004-11-19

Abstract

The utility model provides an expanded plastic-steel pin, which is composed of a rod, a rod cover, a shim plate, and nuts, wherein, the materials of the rod and the rod cover are plastics, reinforcing bars are inserted into the rod whose upper end is a cone and whose bottom is provided with screw threads; the inner circle of the rod cover is provided with a conical cover, the circumference wall of the inner circle is provided with slots which are communicated with the upper end; the design that the rod cover penetrates from the rod bottom, makes the conical sleeve of the rod cover match the cone. The utility model has the advantages of reasonable structure, easy fabrication, high strength, light weight, convenient carrying, and good anticorrosion property, and is suitable for supporting various ground engineering structures and reinforcing slopes.

Description

Expanded plastic-steel pin

The utility model belongs to the field of geotechnical engineering being carried out supporting or strenthening member, is particularly useful for the supporting and the reinforcing of underground construction or side slope.

Adopt the mode of supporting in the underground construction of mine, great majority are bolt-spary supports.Wherein using Surrounding Rock Supported by Bolt, is the key of this support pattern.Therefore, the development of anchor pole has important and practical meanings and economic worth to the supporting problem that solves in the underground construction.Existing anchor pole kind is a lot, and can be two big classes substantially: a class belongs to anchor metal, as pipe seam formula steel anchor rod, and rope bolt, cement cartridge bag anchoring rod bolt etc.Another kind ofly belong to wooden anchor pole, as compressed wood anchor pole etc.In engineering, the metal species anchor pole is used wider, but this class anchor pole price is more expensive, and assembling is complicated, carries inconvenience, brings difficulty to construction to some extent.And wooden anchor rod strength is lower, processed complex, and antiseptic property is poor, can only use in coal road or temporary lining.

The purpose of this utility model provides that a kind of cost is low, intensity good, easy to carry, install and be easy to the expansion type of falling wedge plastic-steel total length anchor pole.

The technical solution of the utility model realizes as follows: the expansion type of falling wedge plastic-steel total length anchor pole, it is made up of the body of rod, bar cover, backing plate and nut.The material of the body of rod adopts plastics, and its upper part is made as cone, and its bottom is provided with screw thread.The material of bar cover also is plastics, and circle is made as conical sleeve in it, and its circumferential wall is provided with a plurality of flutings that communicate with its upper end.The bar cover penetrates the conical sleeve that makes the bar cover from the bottom of the body of rod and the cone of the body of rod is complementary.Body of rod therebetween is marked with reinforcing bar.Reinforcing bar is provided with a plurality of projectioies.

Adopt the utility model compared with prior art, because the material of anchor pole based on plastics, has characteristics in light weight, not water funk, anticorrosion and that anti ageing property is good, and rational in infrastructure, assembling is simple, can alleviate working strength of workers widely, increase work efficiency effectively.

Fig. 1 is a structure scheme of installation of the present utility model;

Fig. 2 is a bar nested structure sectional view of the present utility model;

Fig. 3 is the vertical view of Fig. 2;

Accompanying drawing is a specific embodiment of the present utility model, is further described below in conjunction with accompanying drawing:

In Fig. 1～Fig. 3, the sequence number on the figure is represented: (1) is the body of rod; (2) be the bar cover; (3) be backing plate; (4) be nut; (5) be reinforcing bar; (6) be projection; (7) be fluting.

Referring to Fig. 1～Fig. 3, the expansion type of falling wedge plastic-steel total length anchor pole, it is made up of the body of rod (1), bar cover (2), backing plate (3) and nut (4).The profile material of the body of rod (1) is plastics, and therebetween is marked with reinforcing bar (5), and reinforcing bar (5) is provided with a plurality of projectioies (6), and the body of its upper part is made as cone, and its bottom is provided with screw thread.The material of bar cover (2) also is plastics, and circle is made as conical sleeve in it, leaves three flutings (7) that communicate with its upper end on its circumferential wall.Bar cover (2) penetrates the conical sleeve that makes bar cover (2) from the bottom of the body of rod (1) and the cone of the body of rod (1) is complementary.During use, the body of rod (1) and bar cover (2) are sent in the hole of having bored simultaneously, by hammer lever cover (2), the body of rod (1) falls wedge and bar cover (2) and relatively moves, bar cover (2) is expanded,, produce frictional force between hole arm and the bar cover (2) owing to be subjected to the restriction of hole arm, by the wedging action of falling of the body of rod (1), the body of rod (1) is anchored in the arm of hole again.Then, backing plate (3) is fixed on the bottom of the outer body of rod (1) of hole arm by nut (4).Because the effect of wedge, it is tight more that nut (4) is twisted, and the body of rod (1) is just big more with the anchored force and the extruding force of backing plate (3), thereby reaches the purpose of reinforcing country rock.What deserves to be explained is that initial stage anchored force of the present utility model can reach the requirement of design specifications fully.Along with the distortion of country rock, anchored force also can increase thereupon, i.e. the big more then anchored force of surrouding rock deformation is also big more, and this is to safeguarding that the stable of country rock is very resultful.

Claims

1, the expansion type of falling wedge plastic-steel total length anchor pole, it is made up of the body of rod (1), bar cover (2), backing plate (3) and nut (4), the material that it is characterized in that the body of rod (1) is that its upper part of plastics is made as its bottom of cone and is provided with screw thread, the material of bar cover (2) also for plastics in it circle be made as its circumferential wall of conical sleeve be provided with many with its on the flutings (7) that communicate, bar cover (2) penetrates the conical sleeve that makes bar cover (2) from the bottom of the body of rod (1) and the cone of the body of rod (1) is complementary.

2,, it is characterized in that the body of rod (1) therebetween is marked with reinforcing bar (5) according to the described expansion type of falling the wedge plastic-steel of claim 1 total length anchor pole.

3,, it is characterized in that reinforcing bar (5) is provided with a plurality of projectioies (6) according to the described expansion type of falling the wedge plastic-steel of claim 2 total length anchor pole.