CN201953315U

CN201953315U - Tubular pile rotary drilling bucket

Info

Publication number: CN201953315U
Application number: CN2010206990267U
Authority: CN
Inventors: 李征; 龚晓南; 周建
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-01-22
Filing date: 2010-01-22
Publication date: 2011-08-31
Anticipated expiration: 2020-01-22

Abstract

The utility model relates to a tubular pile rotary drilling bucket comprising an inner annular tube, an outer annular tube arranged outside the inner annular tube and an annular bottom plate arranged at the lower end part of an annular cavity between the inner annular tube and the outer annular tube, wherein the inner annular wall of the annular bottom plate is arranged under the inner annular tube and the outer annular wall of the annular bottom plate is arranged under the outer annular tube, the inner annular wall extends downwards to form an annular extension part which is sleeved with a movable annular bottom plate, the bottom of the movable annular bottom plate is provided with a plurality of earthing ports at which cutting buckle teeth are arranged; an opening correspondingly is arranged on the annular bottom plate corresponding to the earthing ports, the annular bottom plate is at least provided with a positioning member for guaranteeing constant opposition of the earthing ports to the opening in the process of rotary drilling of the drilling bucket; and the lower end of the annular extension part is provided with a barrier for preventing the movable annular bottom plate from sliding downwards. The tubular pile rotary drilling bucket has the characteristics of being stable in operation and high in efficiency.

Description

A kind of stake rotary drilling digger

The utility model application is that the name of on January 22nd, 2010 application is called " a kind of cast-in-situ cylinder pile rotary drilling rig ", application number dividing an application for the utility model patent of " 201020104123.7 ".

Technical field

The utility model belongs to building stake worker field, is specifically related to a kind of stake rotary drilling digger.

Background technology

Number of patent application is " 200910022603.0 ", the application for a patent for invention that name is called " a kind of cast-in-situ cylinder pile rotary drilling rig and piling method thereof " discloses a kind of cast-in-situ cylinder pile rotary drilling rig, it mainly is made up of interior drilling rod group and outer drilling rod group, by interior, the bottom of outer drilling rod group is provided with pivoting support, the outer ring of this pivoting support is fixed on the inwall of bottom drilling rod of outer drilling rod group, in its inner ring is fixed on the outer wall of bottom drilling rod of drilling rod group, in the realization, lifting in the time of outer drilling rod group, in, the lifting of outer drilling rod group mainly is to rely on the wire rope be fixed on its bottom drilling rod and the hoist engine on the frame, and this hoisting way efficient is lower.

Simultaneously, the bottom of being somebody's turn to do the bottom drilling rod of outer drilling rod group is provided with rotary drilling digger, this rotary drilling digger is mainly by interior annular canister, in being arranged on the outer outer ring tube of annular canister in this and being arranged on, on the annular chamber between the outer ring tube, the annular roof plate of bottom and annular bottom plate, evenly be provided with the mouth that buries of a plurality of band cutting bucket tooths on the annular bottom plate bottom, be convenient to revolve in soil enters when digging, annular chamber between the outer ring tube, in order to pour out the soil body in this annular chamber, this annular bottom plate is an end hinge outside on the barrel of annular canister radially, it is along this radially other end and flexible connection of this outer ring tube, like this, during the soil body in pouring out annular chamber, by opening the other end of the base plate that this and outer ring tube flexibly connect, make that the soil body of bottom all exposes in the annular chamber.But, the rotary drilling digger of this kind structure is suitable for clayed soil, the soil body such as sand for the viscosity difference, because its viscosity is very poor, will cause rotary drilling digger in the process that promotes, sand in the annular chamber will fall to revealing by the mouth that buries from base plate, has reduced efficiency of construction, even can't use this drilling bucket.

The utility model content

Technical problem to be solved in the utility model provides a kind of stake rotary drilling digger, to solve the inefficient problem of rotary drilling digger described in the background technology.

In order to make rotary drilling digger in the rig for the soil body such as the sand of viscosity difference, the mouth that buries that is difficult in the process that promotes from base plate falls to leaking, improve efficiency of construction, the utility model has been done two kinds of multi-form improvement to existing rotary drilling digger, one of them is that inner annular wall with rotary drilling digger extends to form an annular extension downwards, a sheathed bottom is provided with a plurality of bands cutting bucket tooths and this cutting bucket tooth is positioned at the movable annular base plate that the mouth that buries is located on this annular extension, on the annular bottom plate mouthful place of should burying is correspondingly provided with an opening, simultaneously, being provided with one on the annular bottom plate at least is used to guarantee to bury mouthful and revolves positioning element relative all the time when digging with opening at drilling bucket; The lower end of annular extension is provided with the block that is used to stop this movable annular base plate downslide; Thus, when fetching earth because the effect of positioning element, make on the movable annular base plate bury mouthful with annular bottom plate on opening relative all the time, guarantee to revolve when digging the body that fetches earth (containing the relatively poor working environments of viscosity such as sand) by burying mouth, opening enters in the annular chamber of rotary drilling digger, when promoting rotary drilling digger, by with the rotary drilling digger reverse rotation, because the movable annular base plate is subjected to the drag effect of the soil body because of the cutting bucket tooth on it, and produce relative motion with annular bottom plate, thereby make a opening on the annular bottom plate and mouthful dislocation of burying on the movable annular base plate, gone into sealing by the imperforation on the movable annular base plate fully at last, cause rotary drilling digger soil body in its annular housing in lifting process can not fall to leaking, improved operating efficiency.

Another kind of scheme is that the cutting bucket tooth on the annular bottom plate is arranged on along the annular bottom plate arc in the tooth handle chamber of extending, the length of the tooth handle of the degree of depth in this tooth handle chamber and this cutting bucket tooth is suitable, when the inwall in this tooth handle chamber is withstood in the inner of tooth handle, bucket tooth on its outer end is stuck just, and the length of tooth handle is greater than the arc length of the opening place camber line on the annular bottom plate, like this, when rotary drilling digger revolves when taking soil, because the barrier effect of tooth handle cavity wall, make bucket tooth enter the soil body, when promoting rotary drilling digger, the counter-rotating rotary drilling digger, because the soil body to the effect of the resistance of bucket tooth, makes the cutting bucket tooth move with respect to annular bottom plate, thereby the tooth handle is hauled out from tooth handle chamber, junction until bucket tooth and tooth handle is blocked by the sidewall of the opening part on the annular bottom plate, so just by the tooth handle of being hauled out with the closure of openings on the annular bottom plate, effectively prevented in the rotary drilling digger lifting process soil body in its annular chamber fall to leaking, improved operating efficiency.

In order further to increase work efficiency, the utility model is provided with an annular push pedal in the annular chamber of rotary drilling digger, the width of this annular push pedal is slightly less than the width of annular chamber, its end face is provided with the push rod of the top board that passes rotary drilling digger, the top of this push rod exposed parts is provided with gland, is provided with the compression spring between this gland and described top board; Push rod is two at least, and be distributed in the described annular push pedal, like this, during the soil body in toppling over the annular chamber that rotary drilling digger, can pass through to the gland applied thrust, then by annular push pedal the soil body in the annular chamber of rotary drilling digger is released, it is more efficient that the rotation of the main at present dependence rotary drilling digger of comparing throws away the soil body.

Above-mentioned rotary drilling digger is meant tube stake rotary drilling digger.

Description of drawings

Fig. 1 is the structural representation of tube stake rotary drilling digger;

Fig. 2 is the structural representation of movable floor;

Fig. 3 is another structural representation of movable floor.

The specific embodiment

Referring to Fig. 1,2, the rotary drilling digger of the cast-in-situ cylinder pile rotary drilling rig that the utility model provides, annular canister 12 in comprising, the annular bottom plate 15 that is arranged on the outer ring tube 13 outside this interior annular canister 12 and is arranged on the bottom of the annular chamber 14 between interior annular canister 12 and the outer ring tube 13, the inner annular wall 16 of this annular bottom plate 15 be arranged in annular canister 12 under, its annular wall 17 be arranged on outer ring tube 13 under, wherein, inner annular wall 16 extends to form an annular extension 18 downwards, be arranged with a bottom on this annular extension 18 and be provided with the movable annular base plate 21 that a plurality of bands cut the mouth 20 that buries of bucket tooths 19, on the annular bottom plate 15 mouthful 20 places of should burying are correspondingly provided with opening, are provided with one on the annular bottom plate 15 at least and are used to guarantee that this buries mouthfuls 20 revolves positioning element relative all the time when digging with opening 22 at drilling bucket; The lower end of annular extension 18 is provided with the block 23 that is used to stop these movable annular base plate 21 downslides.

Positioning element comprises the connecting rod 24 that is arranged between annular bottom plate 15 and the movable annular base plate 21, these connecting rod 24 1 ends are fixed on the annular bottom plate 15, its other end extends in the connecting hole 25 (gap 26) on the movable annular base plate 21, the center arc length at connecting hole 25 (gap 26) place equal at least to bury the center arc length at mouthful 20 places and connecting rod other end place the center arc length and.

For easier the laying down of the soil body that makes in the rotary drilling digger that the utility model provides, present embodiment is provided with annular push pedal 30 in the annular chamber 14 of rotary drilling digger, the width of this annular push pedal 30 is slightly less than the width of annular chamber 14, its end face is provided with the push rod 31 of the top board that passes rotary drilling digger, the top of these push rod 31 exposed parts is provided with gland 32, is provided with compression spring 33 between the top board of this gland 32 and rotary drilling digger; Push rod 31 is two at least, and be distributed on the end face of annular push pedal 30, so, during the soil body in laying down annular chamber 14,, promote annular push pedal 30 then and bulldoze downwards by giving gland 32 application of forces, help the quick landing of the soil body, after the soil body in the annular chamber 14 is unsnatched, remove the external force on the gland 32, annular push pedal 30 sets back under the effect of compression spring 33.

Referring to Fig. 3, improve as another kind rotary drilling digger, the cutting bucket tooth in the present embodiment comprises the tooth handle 28 in the tooth handle chamber 27 that is arranged on the described annular bottom plate 15 and places opening 22 places and the oblique bucket tooth 29 that extends down; The lucky block of connecting portion of bucket tooth 29 and this tooth handle 28 was in the entrance in this tooth handle chamber 27 when the degree of depth in tooth handle chamber 27 all placed this tooth handle chamber 27 when tooth handle 28; The length of opening 22 guarantees that less than the length of tooth handle 28 tooth handle 28 closes opening 22 just when promoting drilling bucket, prevents the leakage that falls of the soil body.

Claims

1. tube stake rotary drilling digger, the annular bottom plate that comprises interior annular canister, is arranged on the outer outer ring tube of this interior annular canister and is arranged on the bottom of the annular chamber between interior annular canister and the outer ring tube, the inner annular wall of this annular bottom plate be arranged in annular canister under, its annular wall be arranged on the outer ring tube under, it is characterized in that: described inner annular wall extends to form an annular extension downwards, be arranged with a movable annular base plate on this annular extension, the bottom of this movable annular base plate is provided with a plurality of mouths that bury, and this mouthful place of burying is provided with the cutting bucket tooth; On the described annular bottom plate place of should burying mouthful is correspondingly provided with an opening, is provided with one on the described annular bottom plate at least and is used to guarantee that described bury mouthful revolve positioning element relative all the time when digging with described opening at drilling bucket; The lower end of described annular extension is provided with the block that is used to stop this movable annular base plate downslide.

2. tube stake rotary drilling digger according to claim 1, it is characterized in that: described positioning element comprises the connecting rod that is arranged between described annular bottom plate and the described movable annular base plate, this connecting rod one end is fixed on the described annular bottom plate, its other end extends in the connecting hole or gap on the described movable annular base plate, the center arc length at described connecting hole or gap place equal at least the center arc length at the described mouthful place of burying and described connecting rod other end place the center arc length and.