CN101655011A - Special resin bolt suitable for mechanically mounting drilling jumbo - Google Patents

Abstract

A special resin bolt suitable for mechanically mounting a drilling jumbo is disclosed, belonging to the field of laneway, tunnel support. The special resin bolt is characterized in that: 1, the bolt body is made of material as required by relevant national standards and adopts a deformed steel bar body; 2, the tail of the bolt body is processed to form a groove; 3, the head of the bolt body has aZ-shaped drill-like structure; 4, a plurality of half moon-shaped structures are processed at the position of the bolt rod in vicinity to a bolt tip; 5, a nut matched with the bolt body is drilled with a hole; and after the nut is screwed at the end of the bolt, the bolt and the nut are fixed together via an anchor pin between the bolt body and the nut matched thereto. The bolt can be used for mechanically mounting the drilling jumbo, the Z-shaped drill-like structure at the head of the bolt body and the half moon-shaped structures on the bolt body can not only fully stir a resin anchoring agent, but also enhance the anchoring force of the bolt; the bolt and the nut of the bolt are fixed together via the anchoring pin, which can not only drive the bolt by a rotating mechanism of the drilling jumbo to fully stir the resin anchoring agent, but can also cut the anchor pin off by the jumbo after the resin anchoring agent is coagulated, and the rotating mechanism of the drilling jumbo drives the bolt to rotate so that the nut of the bolt presses a splint to rock surface.

Description

A kind of special resin bolt that is applicable to that jumbo mechanization is installed

Technical field

The invention belongs to tunnel, tunnel support field, can be applicable to the resin anchor supporting of engineerings such as underground mine tunnel, road and rail traffic tunnel and water conservancy and hydropower tunnel.

Background technology

Bolt support has obvious superiority: can significantly improve supporting effect, reduce support cost, alleviate labor strength, improve operating environment, guarantee safety in production, help the quick propelling of driving face.Therefore, the support pattern of other means such as bolt support and combining anchor sprayed mortar, steel mesh has become at present the most frequently used support patterns of engineering such as underground mine tunnel, road and rail tunnel and water conservancy and hydropower culvert both at home and abroad.

Anchor pole generally comprises resin anchor, grouting rock bolt, portland cement anchor rolling rod, pipe-seam type anchor rod, peg block rock bolt etc., resin anchor is big because of its anchored force, carrying in time, good reliability, adaptive capacity is strong and obtain extensive use in countries in the world, and what China's underground coal mine and metal mine were most widely used is resin anchor.Pusher leg drill is all adopted in the work of punchinging of China's mine installing resin anchor rod, the generally operation on quick-fried heap of resin anchor of top board is installed, following shortcoming is arranged in the operation: the staff is when installing resin anchor rod, must be exposed to operation under the unsupported back, staff's safety is difficult to guarantee; The resin explosive roll bolthole of manually packing into one by one, resin explosive roll end, front and back can be overlapped, on push away difficulty, labour intensity is big; The top board resin anchor is installed must operation on quick-fried heap, so its work cycle is generally: explosion is ventilated, and------the top board resin anchor is installed---to be gone out the part slag---the lateral wall resin anchor is installed to go out the part slag.

Summary of the invention

The used resin anchor that The present invention be directed to engineerings such as underground mine tunnel, road and rail traffic tunnel and water conservancy and hydropower tunnel is manually installed the problem of existence, has proposed a kind of special resin bolt that is applicable to that jumbo mechanization is installed.

This anchor pole and accessory kit thereof are characterised in that:

(1) anchor rod body adopts the material of national standard " Technical code for shotcrete rock bolts shore " and other related specifications regulation, and adopts the screw-thread steel body of rod, to increase the adhesion stress between anchor pole and the resin anchoring agent;

(2) groove (δ is the 0.08-0.4 of bolt diameter) of a wide δ of anchor rod body afterbody processing;

(3) the anchor rod body head adopts the Z font like drill bit shape structure;

(4) anchor rod body is near having processed 2-6 half-moon-shaped bossy body near the anchor pole head;

(5) with on the supporting nut of anchor rod body bore the hole that diameter is 0.6 δ～δ;

(6) after nut is screwed in the anchor pole end, be that the connecting pin of 0.6 δ～δ is fixed together anchor pole and nut by diameter between anchor rod body and the supporting nut.

This anchor pole and tradition with the different manifestations of resin anchor following several aspect:

(1) the anchor rod body afterbody is processed a groove;

(2) rock bolt head adopts the twisted shape structure;

(3) anchor rod body is near near 2-6 half-moon-shaped structure of the processing anchor pole head;

(4) with on the supporting nut of anchor rod body bore a hole;

(5) anchor rod body afterbody nut supporting with it adopts screw thread and connecting pin to fix.

This anchor pole can be used for jumbo mechanization to be installed, and the Z font of anchor rod body head can fully be destroyed the resin anchoring agent packing like drill bit shape structure, and fully agitating resin anchoring agent; The half-moon-shaped structure of processing on the anchor rod body can play the effect of abundant agitating resin anchoring agent, also can improve the anchored force of anchor pole; Fix by connecting pin between anchor nut and the anchor pole, both can drive the abundant agitating resin anchoring of anchor pole agent, can after resin anchoring agent condenses, make chassis cut off connecting pin again, make anchor nut compress supporting plate to scar by the chassis rotating mechanism.

Description of drawings

Fig. 1 anchor rod body afterbody elevation

Fig. 2 anchor rod body afterbody vertical view

Fig. 3 anchor rod body rear side view

Fig. 4 anchor structure

Fig. 5 anchor rod body head processing Z font is like drill bit shape structure (A-A section)

The nut elevation that Fig. 6 anchor pole is supporting

The nut sectional drawing that Fig. 7 anchor pole is supporting

The specific embodiment

The processing request of resin anchor is as follows:

(1) anchor rod body adopts the material processing of national standard " Technical code for shotcrete rock bolts shore " and other related specifications regulation, and adopts screw-thread steel processing;

(2) bolt diameter can be determined according to on-the-spot needs, as is defined as various diameters such as φ 16mm to φ 32mm; Rock-bolt length can determine according to on-the-spot needs, as is defined as all lengths such as 1600mm to 4500mm;

(3) the anchor rod body afterbody is processed as rolled thread screw thread or cutted thread, the about 200mm of reach;

(4) the anchor rod body afterbody is processed the groove of a wide 3mm, and concrete size is seen Fig. 1, Fig. 2 and Fig. 3;

(5) anchor rod body has been processed 3 half-moon-shaped bossy bodies near near the anchor pole head, sees Fig. 4;

(6) the anchor rod body head is processed as the Z font like drill bit shape structure, sees Fig. 5;

(7) Fig. 6, Fig. 7 are seen in the hole of brill one diameter 3mm on the anchor nut.

(8) the anchor pole pallet is a square, its length * wide * thick=150mm * 150mm * 6mm;

(9) anchor rod body afterbody least significant end is installed nut, the groove by hole on the nut and anchor rod body afterbody is fixed together anchor rod body and anchor nut with connecting pin.

When resin anchor is installed, at first with in anchor pole and the resin anchoring agent patchhole thereof, the anchor pole pallet is installed on the anchor rod body, and with the big arm of jumbo with in the rock bolt head patchhole, chassis hammer drill rotating mechanism drives the anchor nut rotation afterwards, owing to fix by connecting pin between anchor nut and the anchor pole, therefore anchor rod body rotates thereupon, the Z font of anchor rod body head can fully be destroyed the resin anchoring agent packing like drill bit shape structure, and fully mixing two kinds of interior cementitious material of resin anchoring agent, the half-moon-shaped excrescence on the anchor rod body also can play the effect of abundant agitating resin anchoring agent.When resin anchoring agent is fully stirred, and when being inserted to anchor rod body at the bottom of the hole, the chassis rotating mechanism stops operating, after resin anchoring agent solidified in tens of second, the resin anchor body of rod was glued and can not rotate with hole wall, starts the chassis rotating mechanism at this moment once more, the chassis rotating mechanism puts on moment on the anchor nut can cut off connecting pin between anchor nut and the anchor pole, this moment, the chassis rotating mechanism continued rotation, and nut advances and finally compresses the anchor pole pallet to scar, the anchor pole installation along spiral thread on anchor bolt.

Claims (1)

1. special resin bolt that is applicable to that jumbo mechanization is installed is characterized in that:

(1) wide δ of anchor rod body afterbody processing is a bolt diameter 0.08-0.4 groove doubly;

(2) the anchor rod body head adopts the Z font like drill bit shape structure;

(3) anchor rod body is near near 2-6 half-moon-shaped structure of the processing anchor pole head;

(4) with to bore a diameter be 0.6 δ～δ hole on the supporting nut of anchor rod body;

(5) after nut is screwed in the anchor pole end, by connecting pin anchor pole and nut are fixed together between anchor rod body and the supporting nut.

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