Making process of integrated forming rock anchoring screw bolt with center hole
A technology of rock bolts and bolt holes, which is used in earth-moving drilling, installation of bolts, mining equipment, etc., can solve the problems of inability to combine soil and stone, inability to carry out internal grouting, and lack of threads for rock bolts, reducing manufacturing procedures and increasing production. The effect of fast production speed and cost reduction
Inactive Publication Date: 2005-04-20
GOLDEN TSAI HSING
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Problems solved by technology
[0006] Yet above-mentioned rock bolt all is a kind of solid rock bolt, and the outside of rock bolt does not have screw thread, under the situation of actual use, because rock bolt does not have central bolt hole, so can't carry out the operation of internal grouting, and rock bolt There is no thread, so it cannot be tightly combined with soil and rock
Method used
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Embodiment Construction
[0047] Such as figure 1 As shown, it is a method for integrally forming a rock bolt screw rod with a central bolt hole of the present invention, which includes:
[0048](1) Take a mandrel 2 as the track for guiding the multi-layer yarn bundle;
[0049] (2) A feeding area 30 is set at one end of the mandrel 2, and the feeding area 30 is provided with a plurality of yarn wheels 32 for supplying composite inner and outer axial yarn bundles 11 and 13 materials, and the The feeding area 30 is provided with a tension control device 31 to control the output tension of the yarn bundles 11 and 13;
[0050] (3) A discharge area 40 is set at the other end of the mandrel 2, and a pulling device 41 is provided in the discharge area 40 to pull each layer of yarn bundles on the mandrel 2 at a constant speed or to send out compositely formed rock bolts:
[0051] (4) On the mandrel 2 tracks, the inner layer yarn bundle polymerization zone 50, the middle layer yarn bundle polymerization zone ...
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The invention relates to a method for integrally forming a rock bolt screw with a central bolt hole, mainly using a mandrel as a track for guiding multi-layered yarn bundles; , the yarn material required for the outer layer; and a discharge area is set at the other end of the mandrel, and a pulling device is provided in the discharge area to pull each layer of yarn on the mandrel at a constant speed or compositely formed rock The bolts are sent out; and the inner, middle and outer yarn bundle polymerization areas, the winding area of the integrally formed thread and another hardening area are successively set on the mandrel track, which is compounded by the way of dense axial distribution and helical winding. Multiple yarn bundles are layered and helically wound to form the thread profile on the surface of the rock bolt; the hardening zone is used to dry it to a hardened state, and then the formed thread is stripped to complete the thread with the central bolt hole The whole rock bolt is finished.
Description
technical field [0001] The invention relates to a method for integrally forming a rock bolt screw rod with a central bolt hole. Background technique [0002] When excavating tunnels, dams, bridge piers, foundations and mine pits, in order to avoid the collapse of weak earth and rocks, rock bolts are generally installed in the earth and rocks as supporting members to reinforce the structural strength of the earth and rocks to reduce the collapse of earth and rocks possibility. [0003] Commonly used rock bolts are made of various steel materials. Rock bolts made of steel have extremely high strength and can withstand the pressure of soil and rocks. collapse phenomenon. [0004] However, under long-term use conditions, the steel rock bolts buried in the soil and rocks are easily affected by the moisture in the soil and rocks, resulting in corrosion and embrittlement. When an earthquake or a relatively strong force shock occurs, corrosion and Embrittled steel rock bolts cann...
Claims
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IPC IPC(8): E21D21/00
Inventor 刘春清
Owner GOLDEN TSAI HSING