CN2565987Y - Sprial tip-rib anchor rod and sprial rib drill rod for drilling sprial tip-rib anchor rod hole - Google Patents

Abstract

The utility model discloses a spiral tip-rib anchor rod and a spiral rib drill rod for drilling a spiral tip-rib anchor rod hole. The utility model comprises a polished rod integrated with a rod body. The surface of the rod body is rolled with a spiral tip rib. The spiral rib drill rod for drilling the spiral tip-rib anchor rod hole comprises the rod body. One end of the rod body is provided with a drilling head and the surface of the rod body is rolled and machined with a spiral rib to enable the rod body and the spiral rib into integration. The utility model thoroughly replaces the always-used complex operation that reinforcing anchor agent is added after an anchor rod is inserted into a hole in the technical field. The utility model has the advantages that the operating mode is very convenient, the anchor rod can be repeatedly used, etc.

Description

The sprial tip-rib anchor rod of spiral point rib anchor pole and drilling sprial tip-rib anchor rod hole thereof

Technical field

The utility model relates to the mine support apparatus, is the sprial tip-rib anchor rod of a kind of spiral point rib anchor pole and drilling sprial tip-rib anchor rod hole thereof.

Background technology

At present, use drilling rod, the anchor pole product of supporting in the mine, common drilling rod mostly for the hexagonal steel of monomer, fried dough twist steel, on round steel, weld spiral ribs, round steel, anchor pole mostly is forms such as screw-thread steel.In use, earlier bore 28 millimeters of nominal diameters, dark circular hole more than 1.8 millimeters with common drilling rod, be that 18-22 millimeter anchor pole inserts in it then with nominal diameter, because thin, the hole of anchor pole is big need add the anchoring agent anchor pole is fixed in the hole, objective reality skyhook means are loaded down with trivial details, increase expensive anchoring agent material and consume and construction cost.If bore and the common drilling rod of existing anchor pole coupling less than 18-22 millimeter hole: the one, rigidity can't be carried out work inadequately; The 2nd, the deslagging difficulty is big during boring; The 3rd, can not realize drilling rod multi-head spiral rib deslagging.

Summary of the invention

The purpose of this utility model provides the sprial tip-rib anchor rod of a kind of spiral point rib anchor pole and drilling sprial tip-rib anchor rod hole thereof, its spiral point rib anchor pole bar footpath 18-22 millimeter and auger shell thereof are revolved the sprial tip-rib anchor rod in sharp rib anchor pole 20-22 millimeter hole, it can solve the various deficiencies that prior art exists, make the thin and rib base thickness of the rib of diameter 18-22 millimeter anchor pole, go up narrow or bladed and gross thickness only account for pitch 1/4th and claim sharp rib, and its body of rod roll extrusion rib full to the brim is integral, the point rib is cut into the hole wall power of carrying and is not being used the anchoring agent when installing and using, and anchor pole is reused.Used drilling rod is by the squeeze buggy process, the body of rod and multi-head spiral rib are processed the drilling rod that a physical efficiency gets out 20-22 millimeter hole, its drilling rod rigidity is exactly by multi-head spiral rib power lotus and the unification of polished rod muscle power lotus, utilizing rib to improve rigidity can equate with common drilling rod intensity, and deslagging utilizes the thin rib of the multi-head spiral of 36 millimeters of coarse pitches better to realize deslagging function.

The utility model adopts following technical scheme to solve in order to solve the existing in prior technology problem, and it has polished rod, polished rod and body of rod one, and roll extrusion has spiral point rib on the body of rod surface.Spiral point rib cross sectional shape thickness is lower than pitch helical pitch 1/4th.(root) thick 1.5-3.5 millimeter at the bottom of the point rib, top approaches the 0.5-2.5 millimeter, the high 1.5-4 millimeter of sharp rib.Point rib pitch helical pitch is the 6-12 millimeter.Spiral point rib cross section structure is pointed or trapezoidal shape.The sprial tip-rib anchor rod of described a kind of drilling sprial tip-rib anchor rod hole, it has the body of rod, and an end of the body of rod is provided with drill bit, and squeeze buggy has spiral ribs on the body of rod surface, makes the body of rod and spiral ribs be one.Drilling rod adopts the multi-head spiral rib structure, and the pitch helical pitch is greater than 30 millimeters, and bar is the 20-21 millimeter directly, bore diameter 20-22 millimeter.Spiral point rib anchor pole adopt 24 millimeters, 22 millimeters, 20 millimeters in round steel respectively cold-drawn become 22 millimeters, 20 millimeters, 18 millimeters, bearing strength is 260KN, 21KN, the above polished rod of 170KN, cold breakdown is pressed with spiral point rib on the polished rod surface then, and its spiral point rib diameter is generally at diameter 23-26 millimeter.Spiral point rib constitutes: one, the suitable cutting of sharp rib self tapping is gone into hole wall, is required the thin bearing strength again of rib, the pitch of standard can be from the first road spiral point rib incision hole wall, back multiple tracks point rib should cut smoothly simultaneously into hole wall, generally under 800 millimeters of sharp rib segment lengths, 80 millimeters situations of pitch, anchored force is adjusted spiral ribs external diameter or bore diameter all greater than 120KN according to coal, rock hardness degree.Anchored force depends on the quantity of spiral point rib incision hole wall, in 800 millimeters of sharp rib segment lengths, 8 millimeters of pitch, promptly there is 100 spirals point ribs rotary cutting self tapping under moment of torsion 130Nm to go into hole wall, so that each spiral point rib adds up its anchored force is bigger and reliable and stable.Owing to adopt the roll extrusion of machine-processed mould wheel, pitch, rib type precision height are installed and used reliable.Pitch is according to thinness, the helical pitch of rib, the thick incision difficulty of rib, cracks the effect that hole wall loses rib incision hole wall easily, and the too little easy chopping hole wall of pitch loses anchored force, and pitch too big one is that difficulty is installed, and the 2nd, spiral reduces descends anchored force.28 millimeters of common drilling rod punching diameters, drill pipe diameter 21-22 millimeter, deslagging be by hole and drilling rod 8 millimeter gap deslagginves, and generally single drilling rod has been beaten, length or hole depth have 1.4 meters, 1.8 meters to beat the nation hole, apical pore is beaten with two length drilling rods cover, 2.2 meters of length or hole depths, more than 2.4 meters.A kind of sprial tip-rib anchor rod of drilling sprial tip-rib anchor rod hole, it has the body of rod, and the body of rod one end is provided with diameter 21-22 millimeter drill bit, and squeeze buggy has spiral ribs on the bar surface, and spiral ribs and bar and one are gained in strength and rigidity.The rigidity of sprial tip-rib anchor rod, deslagging are to solve like this: at first go out the pitch helical pitch greater than 30 millimeters, thick in 3 millimeters greater than 2 spiral ribs, rib at 19 millimeters polished rod squeeze buggies of diameter, the diameter of multi-head spiral rib reaches 21 millimeters, 22 millimeters, and bull rib and bar one can be considered 21 millimeters of drill pipe diameters, 22 millimeters and solved drilling rod rigidity problem.Coarse pitch, multi-head spiral rib and 21 millimeters-22 millimeters drill bits of diameter are utilizing the 19 millimeters gaps in 21 millimeters in rib footpath and bar footpath that slag is discharged smoothly under the rotation at a high speed.

The beneficial effect that the utility model can produce: because of the body of rod and the spiral ribs machine of sprial tip-rib anchor rod is one, so can make the rigidity of drilling rod improve about 30%, its precision increases substantially, and can bore hole below 22 millimeters, can drilling deep hole, realize that simultaneously drilling rod equates with the bit diameter body, realize multi-head spiral, laborsaving especially saving time when making boring; The surface of cause anchor pole is provided with spiral point rib, it can be under the high pulling torque effect, the cutting hole wall is the self tapping form and clamp-ons in the hole wall while rotating, be about to that spiral point rib is imbedded hole wall and hole wall tightly presses together, stronger with this stability, its bearing capacity is reliable and stable, the anchor rod strength raising reaches about 30%, it has thoroughly replaced the loaded down with trivial details work of adding anchor fixing agent in the hole behind the insertion anchor pole again that the present technique field is used till today always, its operational means is quite easy, and can make anchor pole repeated use etc.

Description of drawings

Fig. 1 is the structural representation of the utility model spiral point rib anchor pole;

Fig. 2 is the structural representation of the sprial tip-rib anchor rod of the utility model drilling sprial tip-rib anchor rod hole.

The specific embodiment

Spiral point rib anchor pole, it has polished rod 1, polished rod 1 and the body of rod 2 one, roll extrusion is gone up on the body of rod 2 surfaces spiral point rib 3.Spiral point rib 3 cross sectional shape thickness are lower than pitch helical pitch 1/4th.Spiral point rib 3 ends (root) thick 1.5 ± 3.5 millimeters, thin 0.5 ± 2.5 millimeter of top, spiral point rib 3 high 1.5-4 millimeters.Spiral point rib 3 pitch helical pitches are at the 6-12 millimeter.Spiral point rib 3 cross section structures are pointed or trapezoidal shape.The sprial tip-rib anchor rod of described a kind of drilling sprial tip-rib anchor rod hole, it has the body of rod 2, and an end of the body of rod 2 is provided with drill bit 4, and squeeze buggy is gone up on the body of rod 2 surfaces spiral ribs 5, makes the body of rod 2 and spiral ribs 5 be one.Drilling rod adopts multi-head spiral rib 5 structures, and the pitch helical pitch is greater than 30 millimeters, and bar is the 20-21 millimeter directly, bore diameter 20-22 millimeter.

Spiral point rib anchor pole of the present utility model has polished rod 1, polished rod 1 and the body of rod 2 one, and roll extrusion is gone up on the body of rod 2 surfaces spiral point rib 3.The utility model adopts sharp rib 3 cutting self tappings to go into the hole wall carrying, on a plurality of spiral point rib 3 loading transfer bodies of rod 1,2.The section shape thickness of point rib only accounts for pitch below 1/4th, and 0.8 millimeter on (root) thick 2 millimeters at the bottom of the promptly sharp rib, top are the high 1.5-3 millimeter of sharp or trapezoidal, sharp rib, sharp rib pitch helical pitch is more suitable at the 6-12 millimeter.

A kind of auger shell of the present utility model is revolved the sprial tip-rib anchor rod of sharp rib anchor pole, and it has the body of rod 2, and an end of the body of rod 2 is provided with drill bit 3, and squeeze buggy is gone up on the body of rod 2 surfaces spiral ribs 1, makes the body of rod 2 and spiral ribs 1 be one.Drilling rod of the present utility model can adopt multi-head spiral rib 1 structure, can realize dwindling bore diameter 20-22 millimeter, and adopting the spiral ribs 1 and the body of rod 2 to be one increases rigidity, utilizes multi-head spiral rib 1, big helical pitch, bull rib deslagging.

During use with rig with can hole after sprial tip-rib anchor rod is connected, be connected with rig and spiral point rib anchor pole again, the limit rotation screws in it in this hole and gets final product.Make spiral point rib anchor poles with 20 millimeters round steel and use proof through down-hole, two place, mine with boring 21 millimeters hole sprial tip-rib anchor rods, beat 21 millimeters of dark 1.8 meters, aperture only need 25-45 second, laborsaving, saving of labor.Spiral point rib bolt pretension is good, anchored force is reliable, easy and simple to handle, reduction construction cost.Sharp rib described in the utility model is: rib is thin, narrow or be bladed on the rib base thickness, rib, and gross thickness only accounts for 1/4th of pitch.The technology that the utility model is not described in detail partly is known technology.

Claims (6)

1, spiral point rib anchor pole, it has polished rod (1), it is characterized in that: polished rod (1) and the body of rod (2) one, roll extrusion has spiral point rib (3) on the body of rod (2) surface, the thick 1.5-3.5 millimeter of spiral point rib (3) end (root), top approaches the 0.5-2.5 millimeter, the high 1.5-4 millimeter of spiral point rib (3).

2, spiral point rib anchor pole according to claim 1, it is characterized in that: spiral point rib (3) cross sectional shape thickness is lower than pitch helical pitch 1/4th.

3, spiral point rib anchor pole according to claim 1, it is characterized in that: spiral point rib (3) pitch helical pitch is the 6-12 millimeter.

4, spiral point rib anchor pole according to claim 1, it is characterized in that: spiral point rib (3) cross section structure is pointed or trapezoidal shape.

5, a kind of sprial tip-rib anchor rod of drilling sprial tip-rib anchor rod hole, it has the body of rod (2), it is characterized in that: an end of the body of rod (2) is provided with drill bit (4), and squeeze buggy has spiral ribs (5) on the body of rod (2) surface, makes the body of rod (2) and spiral ribs (5) be one.

6, the sprial tip-rib anchor rod of drilling sprial tip-rib anchor rod hole according to claim 5 is characterized in that: drilling rod adopts multi-head spiral rib (5) structure, and the pitch helical pitch is greater than 30 millimeters, and bar is the 20-21 millimeter directly, bore diameter 20-22 millimeter.

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