CN201031622Y

CN201031622Y - Drill of rotary dig/drill machine

Info

Publication number: CN201031622Y
Application number: CNU2007201429471U
Authority: CN
Inventors: 刘国宇; 魏德胜; 郑宝杰
Original assignee: LIU GUOYU WEI DESHENG ZHENG BAOJIE; LIU GUOYU WEI DESHENG ZHENG BA
Current assignee: LIU GUOYU WEI DESHENG ZHENG BAOJIE; LIU GUOYU WEI DESHENG ZHENG BA
Priority date: 2007-04-19
Filing date: 2007-04-19
Publication date: 2008-03-05
Anticipated expiration: 2017-04-19

Abstract

The utility model relates to an aiguille of a rotary drill which relates to the field of civil foundation work machine. The existing aigulle can not guarantee the verticality and the rate of oversize of the aigulle, has a large drilling resistance, consumes much energy and increases the cost of construction. Some aiguilles can not open automatically when unloading the earth and needs to be cooperated with a specifical person. To solve the problems, the utility model adopts a circular conical surface as the bottom surface of a drilling bucket and a locating cone is arranged on the top of the cone. A plurality of drilling teeth are arranged on the conical surface and are arrayed in a row from the bottom to the top of the cone. The upper surface of the drilling bucket is provided with a tripper, through which the bottom of the drilling bucket can be opened automatically when unloading the earth and is also provided with a stop block. A cornish bit is arranged on the upper part of the drilling bucket and an edge cutter is arranged on the lower side of the drilling bucket. The drilling bucket is connected with the drill pipe by adopting horizontal and vertical bidirectional double-pin connection. The utility model has the beneficial effects of accurate location, convenient earth unloading, light and quick cutting and scraping, few energy consumption, simple structure, long service life and convenient operation.

Description

The rotary drilling rig drill bit

Technical field

The utility model relates to engineering machinery field, especially the foundation of civil work engineering machinery.

Background technology

In the foundation of civil work engineering, bore operation often adopts rotary drilling rig to carry out operation, and one of critical component of rig is a drill bit, and can whether drill bit structure be excellent, determined rig give full play to usefulness.Rig used drill bit when carrying out the boring extracting soil operation is generally two kinds: a kind of is European current version, drill bit is thick and heavy, and is flat, and it is clumsy to bore tooth, be difficult to guarantee the verticality of boring, and easily cause and enlarge the aperture, be arranged in the vertical bar of drilling bucket periphery, cause that to creep into resistance big, consume fuel is many, increased construction cost, as met the too thick geological conditions of sand bed, just easy bit freezing; Another kind is Japanese current version, and drill bit is lightly nimble, and it is sharp to bore tooth, but drill bit can not open when unloading soil automatically, needs the special messenger to cooperate unlatching, adopts single pin to be connected in drill bit and drilling rod junction, and pin-and-hole is thin again, and causing easily breaks sells and underground drilling accident.In order to give full play to the usefulness of rig, must transform drill bit.

Summary of the invention

The purpose of this utility model is for providing a kind of boring accurate positioning, cuts briskly, unloads cubic metre of earth just the rotary drilling rig drill bit that does not need personnel to cooperate.

The technical scheme that realizes the foregoing invention purpose is as follows:

The rotary drilling rig drill bit, have drilling bucket, the drilling bucket bottom surface is conical, has locating cone at the vertex of a cone, the a plurality of brill teeth that are equipped with on the drilling bucket bottom surface were arranged in a row from the awl end to the vertex of a cone, and the angle of vertical diameter of each brill tooth and drilling bucket bottom surface is at 30 °-60 °, having into Tu Kou with the brill front flank, in a drilling bucket bottom of entering soil mouthful side the limit cutter is housed, in drilling bucket one side the opening apparatus that bumps of opening the awl end is housed also, drill bit is connected with the two-way anyhow double-pin of being connected to of drilling rod.

The opening apparatus that bumps of opening the awl end has and vertically is contained in bumping of drilling bucket top sides edge and starts, be with return spring on starting bumping, in drilling bucket, bump and start to be connected with an end of connecting rod, the other end of connecting rod is equipped with the bruising piece, the bottom surface of bruising piece contacts with the last hook that is contained in the drilling bucket bottom is movable, the drill bit bottom surface inboard with on the hook relevant position lower draw-bar is housed, the mutual hook of upper and lower hook connects, both sides of contact are the inclined-plane, last hook is in the outside, inclined-plane, lower draw-bar is in the inboard, inclined-plane, at the opposite side of drill bit bottom surface lower draw-bar the rotating shaft that the end is bored in folding is housed.

The cornish bit that stretches to the drilling bucket outside is housed at the drilling bucket top, and cornish bit stretches to the distance in the drilling bucket outside by a plurality of adjustment hole adjustment on the hilt.Be equipped with at the drilling bucket top and bump the position limitation protection bar of starting.

When rotary drilling rig is worked, be taper surface because take on a completely new look at the bottom of the drill bit, also have the locating cone of protrusion at the vertex of a cone of drilling bucket bottom center, drill bit can not moved arbitrarily, guaranteed the accurate positioning of position, hole.After having filled boring mud in the drilling bucket, drill bit is extracted from boring, press then and bump bumping of opening apparatus and start, connecting rod and bruising piece and then move down, to go up hook and depress, hook moves simultaneously laterally along the inclined-plane that contacts with lower draw-bar on this moment, breaks off relations mutually up to upper and lower hook, boring the end is that open downwards in the axle center according to the bottom surface rotating shaft that is located at the bottom surface another side just, and the boring mud in the drilling bucket just draws off automatically.After boring mud is unsnatched, will bore end kiss the earth, reduce crown height more gradually, bore the end just by on the bout of top, link mutually once more up to upper and lower hook, rig just can carry out drilling operation next time.

The utlity model has following beneficial effect:

1, accurate positioning because the drill bit bottom surface is the convex cone face, also has locating cone at the vertex of a cone, has guaranteed the verticality and the oversize rate of boring;

2, adopted and bump opening apparatus, reached and unloaded soil purpose easily, do not needed the full-time staff to cooperate, minimizing personnel configuration has alleviated labour intensity;

3, be provided with cornish bit on drilling bucket wall top, both made things convenient for reaming, made things convenient for again and buried casing underground, be provided with the limit cutter in drilling bucket wall bottom, the boring wall is separated with the drilling bucket wall, eliminated the frictional force of drill hole wall in the face of drill bit, it is brisk to have reached cutting, the purpose of energy efficient;

4, simple in structure, long service life, easy to operate.

Description of drawings:

Fig. 1 is the utility model rotary drilling rig drill bit top structure schematic diagram;

Fig. 2 is the utility model rotary drilling rig drill bit internal structural representation;

Fig. 3 is the utility model rotary drilling rig drill bit polycrystalline substance schematic diagram;

The specific embodiment

Fig. 1-Fig. 3 has shown the concrete structure of drill bit; Fig. 1 has shown that the bumping of opening mechanism of bumping that be equipped with at drilling bucket 1 top start 2; be with return spring 9 on starting bumping; the perpendicular connecting pin 3 and the horizontal connecting pin 4 that connect drill bit and drilling rod; position limitation protection bar 6; the cornish bit 7 that stretches to the drilling bucket outside is housed; adjustment hole 8 with the adjustment outreach that has on the cornish bit hilt; Fig. 2 has shown in the inside of drilling bucket one side and is equipped with and bumps the connecting rod 10 of starting to be connected; the other end at connecting rod is equipped with bruising piece 11; the bottom of bruising piece and last hook 12 movable contacts; drill bit bottom surface 14 inboard with on the corresponding position of hook lower draw-bar 13 is housed, on; the mutual hook of lower draw-bar connects, and bumps the opening mechanism offside at the brill end bottom surface rotating shaft 16 is housed; drilling bucket bottom surface 14 is the taper seat of evagination, at the vertex of a cone locating cone 15 is housed.Fig. 3 has shown two gang drill teeth 18 has been housed on the drill bit bottom surface, list in the both sides of locating cone respectively, extend to the vertex of a cone from the awl end, each angle that bores vertical diameter of tooth and drill bit bottom surface is an angle of 30 °-60 °, and change successively gradually, respectively have into soil mouth 19 at two gang drill front flanks, enter a soil mouthful other drilling bucket bottom at each limit cutter 5 respectively is housed, a plurality of alignment pins 20 are housed on the drill bit bottom surface.

Claims

1. rotary drilling rig drill bit, has drilling bucket, it is characterized by the drilling bucket bottom surface for conical, have locating cone, a plurality of brill teeth are housed on the drilling bucket bottom surface at the vertex of a cone, arrange in a row from the awl end to the vertex of a cone, the angle of vertical diameter of each brill tooth and drilling bucket bottom surface bores front flank and has into Tu Kou at 30 °-60 °, in a drilling bucket bottom of entering soil mouthful side the limit cutter is housed, in drilling bucket one side the opening apparatus that bumps of opening the awl end is housed also, drill bit is connected with the two-way anyhow double-pin of being connected to of drilling rod.

2. rotary drilling rig drill bit according to claim 1, it is characterized by the opening apparatus that bumps of opening the awl end has and vertically is contained in bumping of drilling bucket top sides edge and starts, be with return spring on starting bumping, in drilling bucket, bump and start to be connected with an end of connecting rod, the other end of connecting rod is equipped with the bruising piece, the bottom surface of bruising piece contacts with the last hook that is contained in the drilling bucket bottom is movable, the drilling bucket bottom surface inboard with on the hook relevant position lower draw-bar is housed, on, the mutual hook of lower draw-bar connects, both sides of contact are the inclined-plane, last hook is in the inclined-plane outside, and lower draw-bar is in the inboard, inclined-plane, at the opposite side of drilling bucket bottom surface lower draw-bar the rotating shaft that the end is bored in folding is housed.

3. rotary drilling rig drill bit according to claim 1 and 2 is characterized by at the drilling bucket top cornish bit that stretches to the drilling bucket outside is housed, and cornish bit stretches to the distance in the drilling bucket outside by a plurality of adjustment hole adjustment on the hilt.

4. rotary drilling rig drill bit according to claim 1 and 2 is characterized by to be equipped with at the drilling bucket top and bumps the position limitation protection bar of starting.

5. rotary drilling rig drill bit according to claim 3 is characterized by to be equipped with at the drilling bucket top and bumps the position limitation protection bar of starting.