CN201943618U

CN201943618U - Bottom cleaning drilling bucket for reaming pile

Info

Publication number: CN201943618U
Application number: CN2010206715819U
Authority: CN
Inventors: 陈朝晖; 吴方晓; 高春华
Original assignee: Beijing Sany Heavy Machinery Co Ltd
Current assignee: Beijing Sany Heavy Machinery Co Ltd; Sany Heavy Machinery Ltd
Priority date: 2010-12-21
Filing date: 2010-12-21
Publication date: 2011-08-24
Anticipated expiration: 2020-12-21

Abstract

The utility model discloses a bottom cleaning drilling bucket for a reaming pile, which relates to a device used for cleaning stones and sandy soil on the bottoms of holes of the reaming pile. The utility model aims to provide the bottom cleaning drilling bucket for the reaming pile, which has a simple structure, low cost and high work efficiency and is simple and convenient to operate. The bottom cleaning drilling bucket for the reaming pile comprises a drill crown and a cylindrical drill body, wherein the drill crown is connected with a drill stem; the bottom of the drill body is provided with a drill bottom; the drill bottom is provided with at least two work wings; each work wing comprises a connecting plate and a scraping plate; the connecting plates are arranged in parallel with the drill bottom; the inner ends of the connecting plates are hinged onto the drill bottom; the scraping plates are longitudinally fixed on the connecting plates; the position on the drill bottom, which corresponds to the inner end of each connecting plate, is provided with a through hole; a soil gathering plate is arranged below each through hole; the upper ends of the soil gathering plates are connected with the drill bottom; and the lower parts of the soil gathering plates face the scraping plates.

Description

The clear subdrilling bucket of reaming stake

Technical field

The utility model relates to a kind of at the device that is used for collecting the well deposited material, particularly relates to a kind of drilling bucket that is used to clear up reaming stake hole bedstone piece and sandy soil.

Background technology

Pile foundation is a building field base form commonly used, and bored pile has occupied leading position with its unique advantage in pile foundation is used.But no matter design a type is any, and sediment thickness requires all compare strictness at the bottom of its hole before to concrete spouting, because the thickness of sediment directly affects the size of pile capacity at the bottom of the hole.In the engineering practice, a most important procedure is exactly how sediment, the i.e. clear end, clear hole at the bottom of the cleaning hole in the bored pile construction.Traditional method of the clear end is to utilize conduit to insert slush pump before concrete spouting, utilize direct circulation or anti-the circulation at the clear end, sometimes then utilization is drawn the mud bucket and drawn the clear hole of slag, and there is following shortcoming in these technology of clear end: one, end effect is undesirable clearly, influences the performance of bearing capacity of pile foundation.Utilize slush pump just (instead) circulation the clear end be by mud circulation with the hole at the bottom of sediment take out of, it is subjected to slush pump Effect on Performance maximum, particularly direct circulation, the stake hole depth is dark more, big more clear hole, aperture effect is undesirable more; Two, the clear hole time is longer; Three, the mud of amplification quantity side by side be need use, environment pollution and waste water resource and soil resource caused.Defective in view of the existence of technology of the above-mentioned clear end, the clear hole of the anti-circulation of a kind of gaslift method has appearred again, this method mainly be utilize air compressor machine with gas by sending in the conduit with the tracheae that is placed in the conduit, gas and mud are mixed, form the slurry gas mixture, because of its density original mud in the hole, produce difference in specific gravity, form buoyancy, make mud flow out conduit, form circulation, sediment at the bottom of the hole is taken out of, reach the purpose at the bottom of the cleaning eye.But also there are some shortcomings in this method: one, need to excavate mud pit in the work progress, and equipment such as configuration mud, conduit, appendix, cost is higher, and technology is complicated; Two, for the clear end of Large Diameter Pile Holes, particularly reaming stake needs the air compression station of higher configured, otherwise sordid phenomenon can occur clearing up.

The utility model content

The technical problems to be solved in the utility model provide a kind of simple in structure, cost is low, the clear subdrilling bucket of reaming stake easy and simple to handle, high efficiency.

The clear subdrilling bucket of the utility model reaming stake, comprise that the brill that is used for being connected with drilling rod pushes up and columnar drill body, the bottom of described drill body is provided with bores at the end, be provided with at least two work wings at the bottom of the described brill, each described work wing comprises junction plate and scraper plate, described junction plate be arranged in parallel with the brill end, the inner of junction plate is hinged on bores at the end, described scraper plate is vertically fixed on the junction plate, position corresponding with each junction plate the inner at the bottom of the described brill all offers a through hole, each described through hole below all is provided with a soil collecting plate, and the upper end of described soil collecting plate is connected with boring the end, and the bottom of soil collecting plate is towards scraper plate.

The clear subdrilling bucket of the utility model reaming stake, the corresponding limiting plate of wing number that is fixedly connected with and works at the bottom of the wherein said brill, described limiting plate is used to limit the rotational angle of junction plate.

The clear subdrilling bucket of the utility model reaming stake, the cross section of wherein said scraper plate is an arc.

The clear subdrilling bucket of the utility model reaming stake, the wherein said work wing is two, is symmetricly set on to bore at the end.

The clear subdrilling bucket of the utility model reaming stake, wherein said junction plate was rotatably connected by the bearing pin and the brill end.

The clear subdrilling bucket of the utility model reaming stake, the lower surface of wherein said scraper plate be the cambered surface that is bent upwards or with bore parallel plane, the end.

The work wing of the clear subdrilling bucket of the utility model reaming stake utilization brill at the end gathers the sandstone at the bottom of the hole position at close center, drilling bucket bottom when drilling bucket rotates, in rotary course, directly shovel sandstone in the drill body by soil collecting plate again, adopt the mode that directly fetches earth, do not need to dispose mud and other corollary equipments, simple in structure, with low cost, stable work in work, and be not limited by the size in aperture, can adapt to the stake hole of different-diameter by the size of the wing that more changes jobs.

Below in conjunction with accompanying drawing the clear subdrilling bucket of reaming stake of the present utility model is described further.

Description of drawings

Fig. 1 is the stereogram of the clear subdrilling bucket of the utility model reaming stake;

Fig. 2 is the upward view (state is opened in the work span) of the clear subdrilling bucket of the utility model reaming stake;

Fig. 3 is the upward view (work wing collapsed state) of the clear subdrilling bucket of the utility model reaming stake.

The specific embodiment

As depicted in figs. 1 and 2, the clear subdrilling bucket of the utility model reaming stake comprises brill top 1 and the columnar drill body 2 that is used for being connected with drilling rod, the bottom of drill body 2 is provided with bores at the end 3, bore and be symmetrically arranged with two work wings 4 at the end 3, each work wing 4 comprises junction plate 41 and scraper plate 42, junction plate 41 be arranged in parallel with the brill end 3, bore by bearing pin 34 rotating being connected at the end 3 the inner of junction plate 41, cross section is that the scraper plate 42 of arc is vertically fixed on the junction plate 41, the lower surface of scraper plate 42 is the cambered surface that is bent upwards, in addition also can for bore parallel plane, the end 3.Bore corresponding with each junction plate 41 the inner position at the end 3 and all offer a through hole 31, each through hole 31 below all is provided with a soil collecting plate 32, and the upper end of soil collecting plate 32 is connected with boring the end 3, and the bottom of soil collecting plate 32 is towards scraper plate 42.The edge of boring the end 3 is fixedly connected with two limiting plates 33.

The course of work of the clear subdrilling bucket of the utility model reaming stake is as follows: after the reaming of reaming rig finishes, reaming bit is lifted from reaming stake hole, will bore top 1 then and be connected with drilling rod, the wing 4 rotations of working this moment are contracted in brill below, the ends 3, as shown in Figure 3.At the bottom of drilling bucket integral body below to reaming stake hole, starting unit head drive drilling rod and drilling bucket then turns clockwise, the work wing 4 outwards launches, junction plate 41 and limiting plate 33 interferences when being deployed into correct position, the work wing 4 is limited in suitable operating angle, under the effect of scraper plate 42, sandstone at the bottom of the hole are assembled to boring center, 3 below, the end, along with the rotation of soil collecting plate 32, thus sandstone gone in the through hole 31 to enter in the drill body 2 by soil collecting plate 32 shovel, after hole bed-sit soil cleans out, be rotated counterclockwise drilling rod and drilling bucket, the work wing 4 is inwardly packed up, and integral body is lifted from reaming stake hole with drilling bucket then, outside the hole sandy soil in the drill body 2 is removed.

Above-described embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model; for example increase the number of the work wing; increase or reduce the length of junction plate and scraper plate, change the shape of scraper plate, all should fall in the definite protection domain of the utility model claims.

Claims

1. clear subdrilling bucket of reaming stake, it is characterized in that: comprise that the brill that is used for being connected with drilling rod pushes up (1) and columnar drill body (2), the bottom of described drill body (2) is provided with bores at the end (3), (3) are provided with at least two work wings (4) at the bottom of the described brill, each described work wing (4) comprises junction plate (41) and scraper plate (42), described junction plate (41) be arranged in parallel with the brill end (3), the inner of junction plate (41) is hinged on bores at the end (3), described scraper plate (42) is vertically fixed on the junction plate (41), (3) are gone up the position corresponding with each junction plate (41) the inner and are all offered a through hole (31) at the bottom of the described brill, each described through hole (31) below all is provided with a soil collecting plate (32), the upper end of described soil collecting plate (32) is connected with boring the end (3), and the bottom of soil collecting plate (32) is towards scraper plate (42).

2. the clear subdrilling bucket of reaming stake according to claim 1 is characterized in that: be fixedly connected with on (3) at the bottom of the described brill and the corresponding limiting plate of the wing of working (4) number (33), described limiting plate (33) is used to limit the rotational angle of junction plate (41).

3. the clear subdrilling bucket of reaming stake according to claim 2 is characterized in that: the cross section of described scraper plate (42) is an arc.

4. the clear subdrilling bucket of reaming stake according to claim 3 is characterized in that: the described work wing (4) is two, is symmetricly set on to bore at the end (3).

5. the clear subdrilling bucket of reaming stake according to claim 4 is characterized in that: described junction plate (41) is rotatably connected by bearing pin (34) and the brill end (3).

6. the clear subdrilling bucket of reaming stake according to claim 5 is characterized in that: the lower surface of described scraper plate (42) be the cambered surface that is bent upwards or with bore (3) parallel plane, the end.