CN101845938A

CN101845938A - Three-wing bit

Info

Publication number: CN101845938A
Application number: CN 201010176609
Authority: CN
Inventors: 龙时新
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-19
Filing date: 2010-05-19
Publication date: 2010-09-29
Anticipated expiration: 2030-05-19
Also published as: CN101845938B

Abstract

The invention relates to the technical field of civil engineering machinery drilling, in particular to a three-wing bit. The three-wing bit is named according to the working principle and the physical formation thereof. In the basic project construction of civil engineering, the invention effectively solves the problems that various resistances are caused by high-density slurry-containing soil layers, high-density clay property and complex drifting geology in the drilling operation of civil engineering and a drilling host is hard to drill and lift rods because of high-density clay property and drifting geology. The drill and the main component comprise a cylinder tool holder and three cutter bodies with same shape, wherein the cutter bodies are fixed on the tool holder and of a cone structure; the cutter bodies are provided with a plurality of distributed alloy spheres; the end part and the cutting surface are provided with a plurality of round drilling teeth; the included angle between the cutter body and the horizontal plane is 40-45 degrees; the outer extension ends of three cutter bodies are provided with three high-density alloy wings with same shapes; and in the drilling operation, three alloy wings of the drilling host are first to shock the hard geological stratum to cause molecular structure and geologic structure the of the geological stratum to be instantaneously changed to produce creases. The invention effectively lowers power loss of the drilling host, effectively prolongs the service life of the drilling host, and obviously improves construction work efficiency, and work efficiency is increased by 2-3 times.

Description

Three-wing bit

Technical field

The present invention relates to engineering machinery field, specifically is a kind of three-wing bit, is used for ground water development or drills through the ream operation that exceeds bit diameter in building or public works.

Background technology

In building construction process, bore operation often adopts rotary drilling rig to carry out operation, and one of key position of rig is exactly a drill bit, and can whether drill bit structure be excellent, determined rig give full play to usefulness.The scope of application of drill bit has following several: earth pulp containing layer environmental work, drill bit commonly used in this environment during operation drill bit in mud, stop up easily, power consumption strengthens; Backfill soil property environmental work, drill bit commonly used cause that in this environment soil property is loosening, strengthens task difficulty during operation easily on every side; Drift sand formation soil property environmental work, drill bit commonly used are difficult in this environment operation; The work of cobble layer soil property, use material operation in this environment of drill bit commonly used causes drill bit to scrap easily, increases construction cost.Carry out the used drill bit of these bore operations and be generally two kinds: a kind of is Europe platybasic type commonly used, and drill bit is thick and heavy, bores the tooth crude benzol, be difficult to guarantee the verticality of boring, and easily cause the expansion aperture, be arranged in the vertical bar of drill bit periphery, cause the drill bit resistance big, consume fuel is many, increases construction cost; Another kind is Japanese current version, and drill bit is lightly nimble, and it is sharp to bore tooth, but at argillic horizon, the Changjiang river middle and lower reaches soil layer constructions such as cobble layer are sticked when working easily, can not in time get rid of mud again, cause accidents such as idle running, bury drills easily, be difficult to guarantee the verticality and the oversize rate of boring during operation, it is big to creep into resistance, energy consumption is many, has increased the cost of construction, can not open automatically when the drill bit that has unloads soil, need cooperate with the special messenger, be badly in need of drill bit structure is carried out creationary improvement.

Summary of the invention

In order to address the above problem, the object of the present invention is to provide a kind of three-wing bit, realize that one bores the technical purpose of using more, the working environment that is fit to different medium is run into such as the Gobi desert layer when these bore motionless situation and can be destroyed structure around the media, eliminating resistance with three outstanding alar part cutter hubs, work on, accurately the earthwork is unloaded just in the location, cuts brisk, reduce energy consumption, ensure drilling life of bit, increase work efficiency, easy to operate.

For realizing above-mentioned technical purpose, technical scheme provided by the invention is, a kind of three-wing bit, it comprises the cylinder handle of a knife and is cone structure and is fixed on three cutter hubs on the handle of a knife, the cylinder handle of a knife is the step cylindrical structure, the handle of a knife upper end is the major diameter upper cylinder, and to the middle part cylinder, cylindrical lower end, middle part is connected with the cone that screw thread is installed to upper cylinder by conical surface transition; The cylinder handle of a knife is provided with recess and mounting groove is set on seam in the upper cylinder end, three cutter hubs are welded on the described mounting groove and at recess and connect one, three cutter hub bottoms extensions are welded on the stiffening ring, add power and weld described middle part cylinder cylinder by a plurality of reinforcing ribs.

Above-mentioned cutter hub and horizontal plane angle are the 40-45 degree.

Above-mentioned cutter hub end face is provided with the butt joint inclined-plane, and the cutting face on butt joint inclined-plane and the cutting face of cutter hub side are provided with a plurality of circular teeth that bore.

Compare with existing drill bit, the bottoming drill bevel of existing drill bit is difficult to guarantee the verticality and the oversize rate of boring when operation, the present invention has adopted the conical surface as the drill bit bottom surface in order to overcome these problems, use three-wing bit, running into the Gobi desert layer, when the front brill is motionless, use three outstanding bit parts to destroy geotechnical structures, drill bit just can work on.Each alar part that extends out can destroy the structure all around of rock-soil layer, and is after the structural deterioration, just a lot of easily during the work of the apex point at center.Its three cutter hubs are the conical surface and distribute, a plurality of brill teeth are housed on the cutting face of cutter hub, arrange in a row to the vertex of a cone, the limit cutter is housed at the cutter hub sidepiece from the awl end, handle of a knife and cutter hub adopt that retainer plate is two-way anyhow to be connected, the present invention has accurate positioning, unloads the earthwork just, cuts brisk, energy consumption is few, simple in structure, long service life, easy to operate beneficial effect.

Below with reference to accompanying drawings preferred implementation of the present invention is done to describe in further detail.

Description of drawings

Fig. 1 is the three-dimensional structure diagram of three-wing bit of the present invention.

Fig. 2 is the vertical view of Fig. 1 of the present invention.

Fig. 3 is the structure chart of three-wing bit handle of a knife of the present invention.

Fig. 4 is the vertical view of Fig. 3 of the present invention.

The specific embodiment

Referring to Fig. 1 to Fig. 2, accompanying drawing has been represented the three-wing bit of the preferred embodiment for the present invention, main a kind of three-wing bit 1, it comprises cylinder handle of a knife 2 and is cone structure and is fixed on three

cutter hubs

3,4,5 on the handle of a knife, referring to Fig. 3, Fig. 4, cylinder handle of a knife 2 is the step cylindrical structure, and the handle of a knife upper end is a major diameter upper cylinder 6, upper cylinder 6 carries out the transition to middle part cylinder 8 by the conical surface 7, and the lower end of middle part cylinder 8 is connected with the cone 9 that screw thread is installed; The cylinder handle of a knife is provided with recess 10 and mounting groove 14 is set on seam in the upper cylinder end, three cutter hubs are welded on the described mounting groove and at recess and connect one, three cutter hub bottoms extensions are welded on the stiffening ring 11, and stiffening ring 11 welds the cylinder of described middle part cylinder 8 by a plurality of reinforcing

ribs.Cutter hub

3,4,5 and horizontal plane angle are the 40-45 degree.Above-mentioned

cutter hub

3,4,5 end faces are provided with the butt joint inclined-plane, and the cutting face on butt joint inclined-plane and the cutting face of cutter hub side are provided with a plurality of circular teeth 12 that bore.The handle of a knife vertical direction is provided with through hole 13 and prevents to stop up.Handle of a knife is provided with on the cylinder cylinder of middle part and holds breach 15.

Drill bit of the present invention adopts the alloy steel material, and shape triangular in shape is provided with the assembling step.Energy consumption is few, and is simple in structure, long service life, easy to operate beneficial effect.The a plurality of cutter hubs of drill bit are conical and distribute, and locate easily at the vertex of a cone, and a plurality of brill teeth are housed on the cutting face, and the angle of each cutter hub and drill bit bottom surface is in 40-50 degree scope, and the clockwise resistance that effectively reduces reduces wearing and tearing.Prevent that effectively disconnected pin and bury drills etc. from influencing programming.Be used for reamer and dig, can drill through the hole that exceeds bit diameter in ground water development or in building or public works.Running into the Gobi desert layer, when the front brill is motionless, these three outstanding partial destruction geotechnical structures are being arranged, drill bit just can work on.Its effect of wing cutter hub that each extends out is to destroy rock-soil layer structure all around, and is after the structural deterioration, just a lot of easily during the work of the apex point at center.

Although above the specific embodiment of the present invention is described, but this only is exemplary, those skilled in the art can figure out: in claims institute restricted portion, multiple other embodiment can also be arranged, and all based on the embodiment of design philosophy of the present invention all within the scope of the invention.

Claims

1. three-wing bit, it is characterized in that: it comprises the cylinder handle of a knife and is cone structure and is fixed on three cutter hubs on the handle of a knife, the cylinder handle of a knife is the step cylindrical structure, the handle of a knife upper end is the major diameter upper cylinder, to the middle part cylinder, cylindrical lower end, middle part is connected with the cone that screw thread is installed to upper cylinder by conical surface transition; The cylinder handle of a knife is provided with recess and mounting groove is set on seam in the upper cylinder end, three cutter hubs are welded on the described mounting groove and at recess and connect one, three cutter hub bottoms extensions are welded on the stiffening ring, and stiffening ring welds described middle part cylinder cylinder by a plurality of reinforcing ribs.

2. three-wing bit according to claim 1 is characterized in that: described cutter hub and horizontal plane angle are the 40-45 degree.

3. three-wing bit according to claim 1 and 2 is characterized in that: described cutter hub end face is provided with the butt joint inclined-plane, and the cutting face on butt joint inclined-plane and the cutting face of cutter hub side are provided with a plurality of circular teeth that bore.