CN205532298U - A improve drill bit that is used for indoor brill to get rock standard core - Google Patents

Abstract

The utility model discloses an improve drill bit that is used for indoor brill to get rock standard core, including the drill bit body, the inside cavity of drill bit body, it still includes piston group and actuating mechanism, what piston group was movable wears to establish the inside of drill bit body, actuating mechanism with piston group is connected, and is used for the drive piston group for the drill bit body reciprocates. The utility model discloses when appear the core block totally the drill bit this when internal, move down through actuating mechanism drive RAM group, can be with slowly being released by calorie core to the outside of drill bit body, it has avoided the conventional injury that water pressure led to the fact of beaing or strengthen to the drill bit body, and can furthest avoid lead to the fact the damage to the core, improve and get the core success rate, simultaneously, its easy operation is convenient, it is efficient to get the core.

Description

A kind of improvement drill bit drilling through rock standard core for indoor

Technical field

The utility model relates to Geotechnical Engineering rock sample core taking bit technique field, particularly relates to a kind of for indoor Drill through the improvement drill bit of rock standard core.

Background technology

In Geotechnical Engineering, mechanical properties of rock is the data that engineering design is most basic, it is generally required to by a large amount of Experiments of Machanics obtain the mechanics parameter of engineering rock, and drilling through of core is the first step of whole process, is also shadow Ring the first step of experimental data validity.

During core-drilling, especially when running into the sillar containing crack or water-swellable, hold The situation that the core drilled through is stuck in drill bit completely easily occurs, when running into above-mentioned situation, it is common practice to adopt Solve with percussive drill bit or increasing rig inlet opening hydraulic pressure, but, above two settling mode is except meeting Drill bit is caused damage, reduces outside its service life, also can cause certain damage to by card core, these damages Later stage parameter measurement is had a certain impact, and for some weak cementing, stratiform or fissured rock, coring becomes Power can be substantially reduced, even if obtaining complete rock core, the impact of damage the most greatly changes the property of core Matter.

Utility model content

The utility model mainly solves the technical problem in the presence of prior art, thus provides a kind of reduction The damage causing core, the improvement drilling through rock standard core for indoor that can improve coring success rate is bored Head.

Above-mentioned technical problem of the present utility model is mainly addressed by following technical proposals:

The improvement drill bit drilling through rock standard core for indoor that the utility model provides, including drill body, The inner hollow of described drill body, it also includes piston group and drive mechanism, wearing of described piston group activity Being located at the inside of described drill body, described drive mechanism is connected with described piston group, and is used for driving institute State piston group to move up and down relative to described drill body.

Further, described piston group includes upper piston, piston shaft and the lower piston set gradually from top to bottom, Described upper piston is connected with described lower piston through described piston shaft, and the inside of described piston shaft is provided with one Groove, the side sidewall of described groove is additionally provided with tooth bar.

Further, described drive mechanism includes gear, two handles and gear shaft, and described gear is located in On described gear shaft, and described gear matches with described tooth bar, and the two ends of described gear shaft extend out to respectively The outside of described drill body, and the two ends being connected to described gear shaft that two described handles are corresponding respectively.

Further, described upper piston and lower piston being additionally provided with multiple through hole, multiple described through holes are distributed on Described upper piston and the upper surface of lower piston.

Further, the bottom of described lower piston is additionally provided with a wear-resisting back-up coat.

The beneficial effects of the utility model are: when occurring that core is stuck in drill body completely, by driving Motivation structure drives piston group to move down, and will can be slowly pushed out to the outside of drill body by card core, its Avoid routine and beat or strengthen the injury that drill body is caused by hydraulic pressure, and can avoid rock to greatest extent Core causes damage, improves coring success rate, and meanwhile, it is simple to operation, and coring efficiency is high.

Accompanying drawing explanation

In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below by right In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that below, Accompanying drawing in description is only embodiments more of the present utility model, for those of ordinary skill in the art, On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation improving drill bit drilling through rock standard core for indoor of the present utility model；

Fig. 2 is the knot of the piston group improving drill bit drilling through rock standard core for indoor of the present utility model Structure schematic diagram.

Detailed description of the invention

Below in conjunction with the accompanying drawings preferred embodiment of the present utility model is described in detail, so that the utility model Advantage and feature can be easier to be readily appreciated by one skilled in the art, thus to protection domain of the present utility model Make apparent clear and definite defining.

Refering to shown in Fig. 1-2, the improvement drilling through rock standard core for indoor that the utility model provides is bored Head, including drill body 1, the inner hollow of drill body 1, it also includes piston group 2 and drive mechanism 3, The inside being located in drill body 1 of piston group 2 activity, drive mechanism 3 is connected with piston group 2, and For driving piston group 2 to move up and down relative to drill body 1.In the utility model, when occurring that core is complete When being entirely stuck in drill body 1, piston group 2 is driven to move down by drive mechanism 3, can be by by card Core is slowly pushed out to the outside of drill body 1, which obviates routine and beats or strengthen hydraulic pressure to drill body 1 The injury caused, and can avoid core is caused damage to greatest extent, raising coring success rate, meanwhile, It is simple to operation, and coring efficiency is high.

Specifically, piston group 2 includes upper piston 21, piston shaft 22 and the lower piston set gradually from top to bottom 23, upper piston 21 is connected with lower piston 23 through piston shaft 22, and the inside of piston shaft 22 is provided with one Groove 27, the side sidewall of groove 27 is additionally provided with tooth bar 24.Upper piston 21, lower piston 23 are permissible Being connected with piston shaft 22 by welding manner, wherein, upper piston 2 primarily serves the work of stable plunger group 2 With, during preventing core from drilling through, piston shaft 22 collides with the inwall of drill body 1, lower piston 23 When there is the core of the card, primarily serve the effect releasing downwards core.

Specifically, drive mechanism 3 includes 31, two handles 32 of gear and gear shaft 33, and gear 31 wears On gear shaft 33, and gear 31 matches with tooth bar 24, and the two ends of gear shaft 33 extend out to bore respectively The outside of head body 1, and the two ends being connected to gear shaft 33 that two handles 32 are corresponding respectively, by rotation Change hands handle 32, can rotate with driven gear 31, so that tooth bar 24 and lower piston 23 move up and down, it is achieved The function of the outside of drill body 1 will be pushed out to by card core.

It is also preferred that the left in order to ensure that the cooling water flowing in rig body 1 flows smoothly from the lower end of drill body 1 Go out, upper piston 21 and lower piston 23 are additionally provided with multiple through hole 25, and in order to ensure the uniformity of cooling, Multiple through holes 25 are distributed on upper piston 21 and the upper surface of lower piston 23.Preferably, the end of lower piston 23 Portion is additionally provided with a wear-resisting back-up coat 26, and wear-resisting back-up coat 26 improves the structural strength of lower piston 23, extends The service life of lower piston 23.

In the utility model, when occurring that core is stuck in drill body 1 completely, take out the operation step of core Rapid as follows:

Step one: manually turn clockwise handle 32, handle 32 driven gear 31 rotates；

Step 2: gear 31 matches with tooth bar 24, drives piston shaft 22 down to move；

Step 3: piston shaft 22 drives lower piston 23 down to move, releases by the core of card；

Step 4: rotary handle 32 the most counterclockwise, rises to lower piston 23 need height, carries out next Rock core work.

Wherein, the needs height in step 4 is for effectively to drill through the degree of depth, when i.e. piston group 2 is raised to maximum height Lower piston 23 bottom distance away from drill body 1 bottom, the degree of depth that effectively drills through in the present embodiment is 250mm, certainly, it is possible to carry out reasonable set according to actual conditions.

Above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model not office It is limited to this, any change expected without creative work or replacement, all should contain of the present utility model Within protection domain.Therefore, the protection that protection domain of the present utility model should be limited with claims Scope is as the criterion.

Claims (5)

1. an improvement drill bit for rock standard core is drilled through for indoor, including drill body (1), described The inner hollow of drill body (1), it is characterised in that: also include piston group (2) and drive mechanism (3), The inside being located in described drill body (1) that described piston group (2) is movable, described drive mechanism (3) It is connected with described piston group (2), and is used for driving described piston group (2) relative to described drill body (1) move up and down.

2. the improvement drill bit drilling through rock standard core for indoor as claimed in claim 1, its feature exists The upper piston (21) that includes setting gradually from top to bottom in: described piston group (2), piston shaft (22) and Lower piston (23), described upper piston (21) is connected with described lower piston (23) through described piston shaft (22) Connect, and the inside of described piston shaft (22) is provided with a groove (27), the one of described groove (27) Tooth bar (24) it is additionally provided with on the sidewall of side.

3. the improvement drill bit drilling through rock standard core for indoor as claimed in claim 2, its feature exists In: described drive mechanism (3) includes gear (31), two handles (32) and gear shaft (33), described Gear (31) is located on described gear shaft (33), and described gear (31) and described tooth bar (24) Matching, the two ends of described gear shaft (33) extend out to the outside of described drill body (1), and two respectively The two ends being connected to described gear shaft (33) that individual described handle (32) is corresponding respectively.

4. the improvement drill bit drilling through rock standard core for indoor as claimed in claim 3, its feature exists In: it is additionally provided with multiple through hole (25), multiple described through holes on described upper piston (21) and lower piston (23) (25) described upper piston (21) and the upper surface of lower piston (23) it are distributed on.

5. the improvement drill bit drilling through rock standard core for indoor as described in any one of claim 2-4, It is characterized in that: the bottom of described lower piston (23) is additionally provided with a wear-resisting back-up coat (26).