CN111140166A

CN111140166A - Double dynamical first drilling machine

Info

Publication number: CN111140166A
Application number: CN202010153361.5A
Authority: CN
Inventors: 龚秀刚; 高超; 干卫平
Original assignee: Zhejiang Jinzu Environmental Treatment Equipment Co Ltd
Current assignee: Zhejiang Jinzu Environmental Treatment Equipment Co Ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-05-12

Abstract

A double-power-head drilling machine comprises an upper power head unit, a lower power head unit and a pile frame upright post with an outer guide rail and an inner guide rail, wherein the upper power head unit is arranged on the inner guide rail of the pile frame upright post; the upper frame is arranged at the upper part of the upper reduction gearbox; the upper lifting pulley block is positioned in the center of the top of the upper frame; the lower power head unit is arranged on an outer guide rail of the pile frame upright post; the lower frame is arranged at the upper part of the lower reduction gearbox; the two groups of lower lifting pulley blocks are positioned at the left side and the right side of the top of the lower frame; the U-shaped cavity of the lower frame is an inner arc vertical surface groove and is arranged at the center of the lower frame along the up-down direction of the lower frame; when the upper power head unit moves downwards, the upper machine frame is completely arranged in the U-shaped cavity of the lower machine frame, so that the non-interference movement is realized. According to the invention, the upper power head unit is sunk into the lower power head unit in a downward manner, so that the height distance between two power head drilling machines is reduced, the height of the stand column of the matched pile frame is effectively reduced, the safety performance of construction equipment is improved, and the adaptability of the construction equipment is further improved.

Description

Double dynamical first drilling machine

Technical Field

The invention belongs to the field of building construction machinery, and particularly relates to a double-power-head drilling machine suitable for cast-in-situ bored pile construction.

Background

In recent years, the urbanization construction of China is rapidly developed, and cast-in-place bored piles are basically adopted for pile foundation construction of construction projects such as high-rise buildings, railways, roads, bridges and the like. In order to improve the bearing capacity of piles and the capability of resisting natural disasters and prolong the service life of buildings, the construction amount of rock-socketed (rock-entering) piles and slide-resistant piles for preventing and treating geological disasters is more and more. The pile holes are often constructed on the gravel layer and even meet large boulders, engineering drilling machines such as a rotary drilling machine and a long spiral drilling machine are difficult to deal with complex stratums, particularly rock strata, and a down-the-hole hammer rock drilling machine is particularly suitable for construction of rock-entering pile foundations and anti-slide piles. The double-power-head down-the-hole hammer rock drilling machine widely applied to Japan, Korea, America, Germany and the like can quickly drill holes in complex strata such as various soft and hard loose strata, gravel layers, pebble layers, rock stratums and the like to form a large-bearing-capacity rock-socketed (rock-entering) pile and an anti-slide pile for preventing and treating geological disasters, has strong adaptability, high construction efficiency, good hole-forming quality and no mud pollution, and is the currently advanced rock-entering and loose-stratum pile hole drilling construction equipment.

In the prior art, the double-power-head drilling machine comprises an upper power head drilling machine and a lower power head drilling machine, and the two power head drilling machines occupy larger space when being hung on the guide upright posts simultaneously. Meanwhile, the two power heads move on the pile frame stand column, so that the operation safety performance of the pile frame is improved, the pile frame stand column with larger height needs to be configured, and the equipment purchase cost of construction enterprises is increased.

Disclosure of Invention

The invention mainly aims to overcome the defects of the conventional double-power-head drilling machine and provide a drilling tool capable of effectively reducing drilling time A double-power-head drilling machine with higher machine height and higher operation efficiency,the height of the stand column of the matched pile frame is effectively reduced, the safety performance of construction equipment is improved, the drilling and excavating construction depth is effectively increased, and the adaptability of the construction equipment is further improved.

In order to achieve the above purpose, the solution adopted by the invention is as follows:

the utility model provides a double dynamical head drilling machine, includes power head unit, lower power head unit, has the pile frame stand of outer guide rail and interior guide rail, wherein:

the upper power head unit comprises an upper lifting pulley block, an upper rack with a top driving force source, an upper reduction box, a connecting flange, an upper guide plate and a limiting plate;

the lower power head unit comprises lower lifting pulley blocks positioned at the left side and the right side, a lower rack with two groups of power sources, a lower reduction box, a sleeve flange, a lower guide plate and a U-shaped cavity;

the method is characterized in that:

the inner guide rail of the pile frame upright post is positioned at the inner stop of the outer guide rail;

the upper power head unit is arranged on an inner guide rail of the pile frame upright post through an upper guide plate; the upper frame is arranged at the upper part of the upper reduction gearbox and transmits power to the upper reduction gearbox through a top driving force source of the upper frame; the connecting flange of the upper reduction gearbox is connected with a plurality of sections of drill rods and drilling tools from the outside; the upper lifting pulley block is positioned at the top of an upper frame of the upper power head, and the upper power head unit is lifted and descended along an inner guide rail of a pile frame upright post after the upper lifting pulley block is wound by a steel wire rope led out from an external pile frame winch; the limiting blocks are arranged on the left side and the right side of the top of the upper frame;

the lower power head unit is arranged on an outer guide rail of the pile frame upright post through a lower guide plate; the lower rack is arranged at the upper part of the lower reduction gearbox and transmits power to the lower reduction gearbox through a top driving force source which is arranged left and right; the sleeve flange of the lower reduction box is connected with an external sleeve; the two groups of lower lifting pulley blocks are positioned at the left side and the right side of the top of the lower frame, and the lower power head unit is lifted and descended along the outer guide rail of the pile frame upright post after the lower lifting pulley blocks are wound by two groups of steel wire ropes led out from an external pile frame winch;

the U-shaped cavity of the lower rack is an inner arc vertical surface groove and is arranged at the center of the lower rack in the up-down direction; when the upper power head unit moves downwards along the inner guide rail of the pile frame upright post, the upper machine frame can completely enter the U-shaped cavity of the lower machine frame of the lower power head unit; after the limiting block is contacted with the top of the lower frame, the upper frame stops immediately and continues to descend.

The lower power head unit also comprises a connecting plate which is fixedly arranged at the back of a lower frame of the lower power head unit and used for transporting the power head unit.

Drawings

FIG. 1 is a schematic structural view of a dual power head drilling machine of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic diagram of the structure of an upper powerhead unit descending to a lower powerhead unit in the present invention;

FIG. 4 is a top view of FIG. 3;

figure 5 is a schematic illustration of the lower powerhead unit of the present invention in its shipping configuration.

In the figure: 10-guide upright column, 11-inner guide rail, 11' -outer guide rail, 20-upper power head unit, 21-upper lifting pulley block, 22-upper frame, 23-upper gearbox, 24-connecting disc, 25-upper guide plate, 26-limiting plate, 30-lower power head unit, 31-lower lifting pulley block, 32-lower frame, 33-lower gearbox, 34-connecting sleeve, 35-lower guide plate, 36-U cavity, 37-connecting plate.

Detailed Description

The dual-power drilling machine of the invention is further described by the embodiment described in the following with reference to the attached drawings.

As shown in fig. 1-4, a dual power head drill includes an upper power head unit 20, a lower power head unit 30, a pile stand column 10 having an inner guide rail 11 and an outer guide rail 11'; the upper power head unit 20 comprises an upper lifting pulley block 21, an upper frame 22 with a top driving force source, an upper reduction box 23, a connecting flange 24, an upper guide plate 25 and a limiting plate 26; the lower power head unit 30 comprises lower lifting pulley blocks 31 positioned at the left side and the right side, a lower frame 32 with two groups of power sources, a lower reduction gearbox 33, a sleeve flange 34, a lower guide plate 35 and a U-shaped cavity 36; wherein:

the inner guide rail 11 of the pile frame upright post 10 is positioned at the inner gear of the outer guide rail 11'; the upper power head unit 20 and the lower power head unit 30 can be ensured to run independently on the pile frame upright post 10 in the up-down and up-down directions without mutual interference, and respective down-going drilling and casing wall protection operations are respectively completed.

The upper power head unit 20 is arranged on the inner guide rail 11 of the pile frame upright post 10 through an upper guide plate 25; the upper frame 22 is arranged on the upper part of the upper reduction gearbox 23 and transmits power to the upper reduction gearbox through a top driving force source thereof; the connecting flange 24 of the upper reduction gearbox 23 is connected with a plurality of sections of drill rods and drilling tools from the outside; the upper lifting pulley block 21 is positioned at the top of an upper frame 22 of the upper power head 20, and the upper power head unit 20 is lifted and descended along the inner guide rail 11 of the pile frame upright post 10 after the upper lifting pulley block is wound by a steel wire rope led out from an external pile frame winch; the limiting blocks 26 are arranged on the left side and the right side of the top of the upper frame 22.

The lower power head unit 30 is placed on the outer guide rail 11' of the pile frame upright 10 through a lower guide plate 36; the lower frame 32 is arranged at the upper part of a lower reduction gearbox 33, and transmits power to the lower reduction gearbox through a top driving power source arranged on the left and the right; the sleeve flange 34 of the lower reduction gearbox 33 is connected with an external sleeve; the two sets of lower lifting pulley blocks 31 are positioned on the left and right sides of the top of the lower frame 32, and the lower power head unit 30 is lifted and descended along the outer guide rail 11 of the pile frame upright 10 after the lower lifting pulley blocks are wound by two sets of steel wire ropes led out from an external pile frame winch.

The U-shaped cavity 36 of the lower frame 32 is an inner arc vertical surface groove which is arranged at the center of the lower frame 32 along the up-down direction of the lower frame; when the upper power head unit 20 moves down along the inner guide rail 11 of the pile frame upright 10, the upper frame 22 can completely enter the U-shaped cavity 36 of the lower frame 32 of the lower power head unit 30; after the stop block 26 contacts the top of the lower frame 32, the upper frame 22 stops moving downward.

As shown in FIG. 5, the lower power head unit 30 also includes a connector plate 37 that is fixedly attached to the back of the lower housing 32 of the lower power head unit 30 for transport and use within the power head unit 30. Therefore, the overall rigidity of the lower power head unit is effectively improved, the situation that the strength is reduced after the lower rack adopts an inner arc surface-shaped groove structure is avoided, the lower power head unit is stable and reliable in transportation, and the damage situations of the upper rack and parts thereof caused by impact are reduced.

The double-power-head drilling machine meets the function of the lower power head unit by arranging the U-shaped cavity which is in an inner arc-shaped outer vertical surface at the periphery of the lower frame of the lower power head unit, ensures that the upper power head unit is arranged in the U-shaped cavity when moving downwards, and reduces the height of the two power head units of the drilling machine to the height of the lower power head unit. Therefore, on the premise of the same drilling depth, the height of the guide stand column of the required matched pile frame can be reduced, the total weight of the guide stand column is reduced, the stability of pile foundation equipment is greatly improved, and the length of a drill rod required by an upper power head drilling machine under the requirement of the same drilling depth is shortened. In addition, under the premise that the height of the guide upright posts is the same, the drilling depth is larger than that of a conventional drilling machine, the adaptability of the drilling machine is effectively improved, the drilling and excavating construction efficiency is greatly improved, and the adaptability of construction equipment is further improved.

Various changes and modifications may be made without departing from the general inventive concept, but they are within the scope of the present invention as long as they are equivalent or similar to the present invention.

Claims

1. A dual power head drill comprising an upper power head unit (20), a lower power head unit (30), a pile stand column (10) having an inner guide rail (11) and an outer guide rail (11'), wherein:

the upper power head unit (20) comprises an upper lifting pulley block (21), an upper rack (22) with a top driving force source, an upper reduction box (23), a connecting flange (24), an upper guide plate (25) and a limiting plate (26);

the lower power head unit (30) comprises lower lifting pulley blocks (31) positioned on the left side and the right side, a lower rack (32) with two groups of power sources, a lower reduction box (33), a sleeve flange (34), a lower guide plate (35) and a U-shaped cavity (36);

the method is characterized in that:

the inner guide rail (11) of the pile frame upright post (10) is positioned at the inner gear of the outer guide rail (11');

the upper power head unit (20) is arranged on an inner guide rail (11) of the pile frame upright post (10) through an upper guide plate (25); the upper frame (22) is arranged on the upper part of the upper reduction gearbox (23), and transmits power to the upper reduction gearbox through a top driving force source of the upper frame; the connecting flange (24) of the upper reduction gearbox (23) is connected with a plurality of sections of drill rods and drilling tools from the outside; the upper lifting pulley block (21) is positioned in the center of the top of an upper frame (22) of the upper power head (20), and the upper power head unit (20) is lifted and descended along an inner guide rail (11) of the pile frame upright post (10) after the upper lifting pulley block is wound by a steel wire rope led out from an external pile frame winch; the limiting blocks (26) are arranged on the left side and the right side of the top of the upper rack (22);

the lower power head unit (30) is arranged on an outer guide rail (11') of the pile frame upright post (10) through a lower guide plate (36); the lower rack (32) is arranged at the upper part of the lower reduction gearbox (33), and the power is transmitted to the lower reduction gearbox through a top driving force source which is arranged left and right; a sleeve flange (34) of the lower reduction gearbox (33) is connected with an external sleeve; the two groups of lower lifting pulley blocks (31) are positioned at the left side and the right side of the top of the lower frame (32), and the lower power head unit (30) is lifted and descended along the outer guide rail (11') of the pile frame upright post (10) after the lower lifting pulley blocks are wound by two groups of steel wire ropes led out from an external pile frame winch;

the U-shaped cavity (36) of the lower rack (32) is an inner arc vertical surface groove and is arranged at the center of the lower rack (32) in the up-down direction; when the upper power head unit (20) descends along the inner guide rail (11) of the pile frame upright post (10), the upper rack (22) can completely enter a U-shaped cavity (36) of the lower rack (32) of the lower power head unit (30); after the limiting block (26) is contacted with the top of the lower frame (32), the upper frame (22) stops moving downwards immediately.

2. The dual-power-head drill of claim 1, wherein the lower power head unit (30) further comprises a coupling plate (37) secured to a back portion of a lower housing (32) of the lower power head unit (30) for transportation of the power head unit (30).