CN213573880U

CN213573880U - Major diameter stake hole former

Info

Publication number: CN213573880U
Application number: CN202022522673.7U
Authority: CN
Inventors: 杨忠财; 刘金红; 杨振宇
Original assignee: Qingyuan Zhongke Zhenyu Machinery Co ltd
Current assignee: Qingyuan Zhongke Zhenyu Machinery Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-06-29
Anticipated expiration: 2030-11-04

Abstract

A large-diameter pile hole forming device comprises a down-the-hole hammer drill for forming an annular groove and a coring device for coring, wherein the down-the-hole hammer drill comprises an annular cluster down-the-hole hammer, the annular cluster down-the-hole hammer comprises an annular barrel, the upper end of the annular barrel is closed and is provided with a connector, a drill rod is connected with the down-the-hole hammer through the connector, a cylindrical cavity is formed in the annular barrel, and annular end faces at the lower end of the annular barrel are provided with drill bits which are distributed annularly; coring device includes the actuating mechanism of pile frame, drive pile frame slope and establishing the bullet of annular barrel inner wall corresponds bullet department on the annular barrel and is equipped with the screw hole that runs through outer wall and inner wall, and the bullet includes screw thread portion and sharp-pointed portion, screw thread portion in screw hole screw-thread fit. The utility model discloses in the down-the-hole hammer rig that will get the core equipment and merge into the circular cut for circular cut and the action of getting the core are in one go, have not only reduced the input of equipment, improve the construction work efficiency in major diameter stake hole moreover.

Description

Major diameter stake hole former

Technical Field

The utility model relates to a down-the-hole hammer, especially a major diameter stake hole former.

Background

The existing common down-the-hole hammer drilling machine is generally only used for the operation of small-diameter pile holes, and a small part of large down-the-hole hammer drilling machine is also used for the operation of large-diameter pile holes. In order to enable a common small-sized down-the-hole hammer drill to excavate large-diameter pile holes, an annular cluster down-the-hole hammer appears, for example, an annular cluster down-the-hole hammer with the Chinese patent publication No. CN111119726A, which comprises a down-the-hole hammer body, wherein a cylindrical cavity is arranged in the down-the-hole hammer body, a plurality of breaking hammers are arranged on the lower end surface of the down-the-hole hammer body, a hammer for driving the breaking hammers to strike a rock stratum is arranged in the down-the-hole hammer body, and a storage device for collecting and storing crushed stone powder is arranged on the down-the-hole hammer body. The annular cluster type down-the-hole hammer firstly performs annular cutting on a rock stratum to form an annular groove, and then a core column is taken out through coring equipment, so that a large-diameter pile hole is formed; because the down-the-hole hammer equipment and the coring equipment are two sets of independent equipment, the operation needs to be switched successively during operation, the equipment cost is increased, and the construction period is prolonged.

Disclosure of Invention

The utility model aims to solve the technical problem that a major diameter stake hole former is provided, reduce equipment cost improves the construction operating efficiency.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a major diameter stake hole former, includes the down-the-hole hammer rig that is used for forming the ring channel and is used for getting the core device of core, down-the-hole hammer rig includes the pile frame platform, establishes pile frame on the pile frame platform, fixes drilling rod, the rotatory unit head of drive drilling rod on the pile frame and establishes at the annular cluster formula down-the-hole hammer of drilling rod lower extreme, annular cluster formula down-the-hole hammer includes annular barrel, the upper end of annular barrel seals and is equipped with the connector, and the drilling rod passes through the connector and connects in the down-the-hole hammer, forms cylindrical cavity in the annular barrel, and the annular terminal surface of annular barrel lower extreme is equipped with the; coring device includes the actuating mechanism of pile frame, drive pile frame slope and establishing the bullet of annular barrel inner wall, correspond bullet department on the annular barrel and be equipped with the screw hole that runs through outer wall and inner wall, the bullet includes screw thread portion and sharp-pointed portion, screw thread portion is in screw hole screw-thread fit. The utility model discloses in the down-the-hole hammer rig that will get the core equipment and merge into the circular cut for circular cut and the action of getting the core are in one go, have not only reduced the input of equipment, improve the construction work efficiency in major diameter stake hole moreover.

As an improvement, the tail part of the bullet head is provided with a groove or a bulge matched with a rotating tool.

As an improvement, the bullet head is arranged at the lower part of the annular cylinder, and the inner wall of the annular cylinder is provided with a limiting block for limiting the extension length of the bullet head.

Compared with the prior art, the utility model the beneficial effect who brings is:

the utility model discloses in the down-the-hole hammer rig that will get the core equipment and merge into the circular cut for circular cut and the action of getting the core are in one go, have not only reduced the input of equipment, improve the construction work efficiency in major diameter stake hole moreover.

Drawings

FIG. 1 is a schematic view of a down-the-hole hammer drill.

FIG. 2 is a schematic view of an annular cluster down-the-hole hammer.

FIG. 3 is a bottom schematic view of an annular cluster down-the-hole hammer.

FIG. 4 is a schematic view of an annular cluster down-the-hole hammer forming an annular trough in the formation.

FIG. 5 is a schematic diagram of an annular cluster down-the-hole hammer breaking the stem obliquely.

FIG. 6 is a schematic drawing of a ring cluster down-the-hole hammer with the stem removed.

FIG. 7 is a schematic view of the annular cluster down-the-hole hammer separated from the stem.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The utility model provides a major diameter stake hole former, mainly is to rock stratum stake hole excavation, and it includes the core device that is used for forming the down-the-hole hammer drill of ring channel and is used for coring.

As shown in fig. 1 to 3, the down-the-hole hammer drill includes a pile frame platform 1, a pile frame 2 arranged on the pile frame platform 1, a drill rod 4 fixed on the pile frame 2, a power head 3 driving the drill rod 4 to rotate, and an annular cluster down-the-hole hammer 5 arranged at the lower end of the drill rod 4. The annular cluster down-the-hole hammer 5 comprises an annular cylinder body 51, the upper end of the annular cylinder body 51 is closed and is provided with a connector 52, the drill rod 4 is connected with the down-the-hole hammer through the connector 52, and the drill rod 4 can drive the cluster down-the-hole hammer to lift and rotate; a cylindrical cavity 53 is formed in the annular cylinder 51, and the annular end surface at the lower end of the annular cylinder 51 is provided with drill bits 56 which are distributed annularly; the working principle of the annular cluster down-the-hole hammer 5 is identical to the general cluster down-the-hole hammer principle, and this embodiment will not be described in detail. The annular cluster down-the-hole hammer 5 is provided with a diameter as required, and since the drill bits 56 are annularly distributed and have a small contact area with the rock formation, the rock formation can be crushed to form the annular groove 6.

As shown in fig. 1 to 3, the coring device includes the pile frame 2, a driving mechanism for driving the pile frame 2 to tilt, and a bullet 54 provided on the lower inner wall of the annular cylinder 51. The pile frame and the pile frame platform 1 are in a hinged structure, a driving mechanism such as a hydraulic cylinder can drive the pile frame to tilt back and forth or left and right, and after the pile frame tilts, the drill rod 4 fixed on the pile frame and the annular cluster down-the-hole hammer 5 fixed at the lower end of the drill rod 4 also tilt. A threaded hole 55 penetrating through the outer wall and the inner wall is formed in the annular cylinder body 51 corresponding to the bullet head 54, the bullet head 54 comprises a threaded part and a sharp part, the threaded part is in threaded fit with the threaded hole 55, the bullet head 54 can extend and retract in the annular cylinder body 51 by rotating the bullet head 54, after the bullet head 54 extends out of the inner wall of the annular cylinder body 51, the sharp part of the bullet head 54 can be embedded into rock, and when the bullet head 54 retracts into the annular cylinder body 51, the bullet head 54 is not in contact with the rock; the tail of the bullet head 54 is provided with a groove or a bulge matched with a rotating tool, and the rotating tool can extend into the threaded hole 55 on the outer wall of the annular cylinder body 51 and rotate the bullet head 54; the bullet head 54 is arranged at the lower part of the annular cylinder body 51, the inner wall of the annular cylinder body 51 is provided with a limiting block for limiting the extending length of the bullet head 54, and the limiting block can limit the extending length of the bullet head 54 out of the inner wall of the annular cylinder body 51 and prevent the bullet head 54 from being separated from the threaded hole 55; for preventing the down-hole process of cluster down-the-hole hammer, the rubble gets into screw hole 55, can set up the stopper ring with end cap shutoff screw hole 55 at the outer wall of annular barrel 51, and the stopper only allows sharp-pointed portion to wear out, and then prevents that the rubble from getting into screw hole 55 from the inner wall of annular barrel 51. The bullet 54 of the present embodiment is extended and retracted by a screw, and the bullet 54 may be extended and retracted by a hydraulic device in order to simplify the extending and retracting operation of the bullet 54.

The utility model discloses major diameter stake hole former's construction method:

(1) as shown in fig. 4, the down-the-hole hammer drill uses the ring cluster down-the-hole hammer 5 to cut on the rock stratum and form a ring-shaped groove 6, the core column 7 in the ring-shaped groove 6 is inserted into the cylindrical cavity 53 of the ring-shaped cylinder body 51;

(2) as shown in fig. 4, in the annular cluster down-the-hole hammer 5, during the drilling process, the bullet 54 on the inner wall of the annular cylinder 51 is embedded into the core column 7 and forms a spiral groove 8 on the surface;

(3) as shown in fig. 5, the annular cluster down-the-hole hammer 5 stops rotary cutting after being drilled to a preset depth, the driving mechanism drives the pile frame to incline, the pile frame drives the drill rod 4 and the down-the-hole hammer to incline, and the core column 7 is broken by utilizing the inclining action of the down-the-hole hammer;

(4) as shown in fig. 6, the down-the-hole hammer is lifted, and the broken stem 7 is gripped by the bullet 54 so as to be lifted out along with the down-the-hole hammer;

(5) as shown in fig. 7, after the broken stem 7 is brought out to the ground following the down-the-hole hammer, the bullet 54 is rotated by the rotating tool, so that the sharp portion of the bullet 54 is retracted and separated from the surface of the stem 7; then, the down-the-hole hammer is lifted up, so that the down-the-hole hammer can be separated from the broken core column 7;

(6) and (5) repeating the steps (1) to (5) until the pile hole reaches a preset depth.

Claims

1. The utility model provides a major diameter stake hole former which characterized in that: the down-the-hole hammer drill comprises a pile frame platform, a pile frame arranged on the pile frame platform, a drill rod fixed on the pile frame, a power head for driving the drill rod to rotate and an annular cluster down-the-hole hammer arranged at the lower end of the drill rod, wherein the down-the-hole hammer drill comprises an annular barrel, the upper end of the annular barrel is sealed and provided with a connector, the drill rod is connected with the down-the-hole hammer through the connector, a cylindrical cavity is formed in the annular barrel, and an annular end face at the lower end of the annular barrel is provided with drill bits which are distributed annularly; coring device includes the actuating mechanism of pile frame, drive pile frame slope and establishing the bullet of annular barrel inner wall, correspond bullet department on the annular barrel and be equipped with the screw hole that runs through outer wall and inner wall, the bullet includes screw thread portion and sharp-pointed portion, screw thread portion is in screw hole screw-thread fit.

2. The large-diameter pile hole forming equipment according to claim 1, wherein: the tail of the bullet head is provided with a groove or a bulge matched with the rotating tool.

3. The large-diameter pile hole forming equipment according to claim 1, wherein: the bullet head is arranged at the lower part of the annular cylinder body, and the inner wall of the annular cylinder body is provided with a limiting block for limiting the extension length of the bullet head.