CN2337194Y

CN2337194Y - Cement winding roof bolt body structure

Info

Publication number: CN2337194Y
Application number: CN 98218958
Authority: CN
Inventors: 韦华南
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-07
Filing date: 1998-09-07
Publication date: 1999-09-08
Anticipated expiration: 2008-09-07

Abstract

The utility model relates to a novel cement winding roof bolt body structure, which is composed of a pallet seat, a supporting pallet, a roof bolt body and a slurry retainer ring. The utility model is characterized in that the pallet seat is composed of two sections of shaped iron having the length of 30 mm and welded with the roof bolt body in a welding way, and then the pallet is sheathed on the pallet seat; finally, the slurry retainer ring is welded on the pallet seat according to the anchoring length of design requirements. Therefore, a contact area between the pallet and the pallet seat is enlarged, carrying capacity is enhanced, the drawing force of the roof bolt is enhanced, the safety of construction work and workers is ensured, the amount of the roof bolt for supporting is reduced, and construction cost is also reduced.

Description

A kind of novel concrete volume anchor rod body structure

The utility model relates to mining engineering utensil class, particularly a kind of novel concrete volume anchor rod body structure.

In mining and underground engineering construction, must guarantee to produce the safety with personnel, then need country rock is carried out supporting, impel country rock firm.Bolt-spary supports is that present technology is advanced, lower-cost a kind of laneway support method, and in the used anchor pole of bolt support, portland cement anchor rolling rod is a kind of novel anchor rod of the eighties invention, and its main feature is that the anchor pole cost is low, and is applied widely, anchored force is big, processing and easy for installation; The body of rod of portland cement anchor rolling rod is pressed material and is distinguished, metallic rod body, the bamboo body of rod and rod body etc. are arranged, especially use the widest with metallic rod body, metallic rod body divides again the round steel body of rod and the profile iron body of rod (as screw-thread steel), round steel body of rod processing more complicated, processing and installation effectiveness are low, and cost is higher relatively, so the profile iron body of rod is applied widely; Profile iron body of rod anchor pole has that processing is simple, processing and installation effectiveness height and low cost and other advantages, but because the pallet of anchor pole is by supporting body of rod afterbody fulling head, pallet and homalocephalus contact area are little, supporting capacity is low, cause the pulling capacity of anchor pole low excessively thus, body of rod diameter when being Φ 16mm general anchored force only be about 50 tons, as shown in Figure 1, (1) is that homalocephalus, (11) are pulp retaining ring for pallet, (12) for anchor bar body, (13).Because the anchor pole pulling capacity is low, can cause following adverse consequences:

1, for guaranteeing the safety of well lane engineering, needing increases bolt support density, thereby has increased support work amount and support cost;

2, reduced the safe coefficient of operating personnel when anchor pole is installed.

The purpose of this utility model is exactly the shortcoming at the anchor pole existence of the above-mentioned profile iron body of rod, and a kind of novel concrete volume anchor rod body structure is provided.

Technical conceive of the present utility model:

According to the purpose of this utility model, improve the connected mode of pallet and tray support seat homalocephalus, increase the contact area of supporting seat and pallet, thereby increase supporting capacity, cause the pulling capacity of anchor pole also to increase thus, its structure is basic similar to original anchor pole, and different is changes the homalocephalus of supporting tray and the anchor rod body same material into, two-section profile iron pallet seat about long 30mm, the pallet seat and the body of rod weld together.

Accompanying drawings structure of the present utility model and embodiment:

Fig. 1 looks schematic diagram for the anchor structure master of the profile iron body of rod of band homalocephalus.

Fig. 2 is the anchor structure cross-sectional schematic of the profile iron body of rod of band homalocephalus.

Fig. 3 looks schematic diagram for master of the present utility model.

Fig. 4 is a cross-sectional schematic of the present utility model.

(1) be that homalocephalus, (11) are that supporting tray, (22) for anchor bar body, (23) be pulp retaining ring for pulp retaining ring, (2) for pallet seat, (21) for anchor bar body, (13) for pallet, (12).

Shown in accompanying drawing 3 and accompanying drawing 4, the utility model is made of pallet seat (2), supporting tray (21), anchor bar body (22) and pulp retaining ring (23), wherein the pallet seat is to weld together with the mode and the anchor rod body of the two-section profile iron about long 30mm with welding, again pallet (21) is enclosed within on the pallet seat, the material of pallet seat is identical with the material of anchor bar body, pulp retaining ring (23) is welded on the body of rod, the effect of pulp retaining ring (23) is extruding, concentrates anchoring agent (cement) that its position on the body of rod is decided according to the anchorage length of design needs.

The utility model is simple in structure, easy for installation, cost is low, and supporting capacity is strong, anchored force is big, and is safe.

Claims

1, a kind of novel portland cement anchor rolling rod body of rod structure, it is made of pallet seat (2), supporting tray (21), anchor bar body (22) and pulp retaining ring (23), it is characterized in that pallet seat (2) is to be welded together by two-section profile iron and anchor rod body about long 30mm, supporting tray (21) is enclosed within on the pallet seat (2), pulp retaining ring (23) is welded on the anchor rod body, and decide according to the anchorage length of design needs its position on the body of rod.