CN210829121U

CN210829121U - Pile machine drill rod and pile machine thereof

Info

Publication number: CN210829121U
Application number: CN201920806147.8U
Authority: CN
Inventors: 周兆弟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-06-23
Anticipated expiration: 2029-05-31

Abstract

The utility model provides a drill rod of a pile machine and the pile machine thereof, which comprises a drill rod body and a drill bit arranged at one end of the drill rod body; the drill bit comprises a main drill bit and a rotor which is coaxially arranged with the main drill bit, the rotor is axially provided with helical blades, and a plurality of roller cutters which rotate automatically during drilling are arranged on the helical blades. The utility model discloses a set up the roller sword on helical blade, make the drilling rod when boring down, when helical blade is rotatory, the roller sword can rotate by oneself with the soil layer friction, and then with the easier stirring of soil layer, improve and bore efficiency down to helical blade's friction damage can be reduced, helical blade's life is increased.

Description

Pile machine drill rod and pile machine thereof

Technical Field

The utility model relates to a stake machine technical field especially relates to a stake machine drilling rod and stake machine thereof.

Background

At present, there are two types of piling machines used on construction sites: one is a rotary pile driver, the structure of the pile driver is pile driving equipment which utilizes a drill rod suspension bracket pulled up by a winch and drives a drill rod drill bit to drill downwards to the ground through a power head; the other type is an impact pile driver, and the structure of the pile driver is that a winch is used for pulling an impact hammer to fall repeatedly and lift the impact hammer to realize pile driving.

The prior art discloses a pile driver drill rod subassembly, including the hollow drilling rod body, drilling rod body one end has drill point pyramis, the one end circumference outside that is equipped with sharp pyramis at the drilling rod body is equipped with the helical bit blade that is the heliciform and distributes the setting, helical bit blade one end extends to drill point pyramis, the other end links to each other with the whitewashing seat of radial setting in the drilling rod body outside, whitewashing seat has at least one whitewashing hole that links to each other with the drilling rod body inside towards one side of drill point pyramis, and the aperture in whitewashing hole grow gradually from inside to outside.

However, in the above structure, since the blades of the auger bit cut the gravel and soil and the like all the time during the drilling process, the blades of the auger bit wear quickly during the drilling process, and the drilling efficiency is not high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's is not enough, provides one kind and can reduce helical blade wearing and tearing, improves the stake machine drilling rod of boring efficiency down.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a drill rod of a pile machine comprises a drill rod body and a drill bit arranged at one end of the drill rod body;

the drill bit comprises a main drill bit and a rotor which is coaxially arranged with the main drill bit, the rotor is axially provided with helical blades, and a plurality of roller cutters which rotate automatically during drilling are arranged on the helical blades.

Preferably, the roller cutters are arranged at intervals around the spiral track of the spiral blade;

preferably, the central axis of the roller blade is perpendicular to the central axis of the helical blade.

Preferably, a plurality of stirring blade groups which are arranged axially at intervals along the drill rod body are arranged above the helical blades of the drill rod body;

preferably, the drilling radius of the drill is larger than or equal to the maximum stirring radius of the stirring blade group.

Preferably, the stirring blade group comprises more than two stirring blades distributed at intervals along the circumferential direction of the drill rod body, and the length direction of each stirring blade is perpendicular to the central axis of the drill rod body;

preferably, the blade surface of the stirring blade is inclined to the central axis of the drill rod body, and when viewed in a front view direction of the drill rod of the pile machine, at least part of the blade surface of the stirring blade is inclined downwards in a clockwise direction, or at least part of the blade surface of the stirring blade is inclined downwards in a counterclockwise direction.

Preferably, the roller cutters are arranged on at least part of the stirring blades, and the central axes of the roller cutters are parallel to the central axis of the drill rod body.

Preferably, at least part of the stirring blade groups are sleeved with a guide ring along the axial direction of the drill rod body, and the end parts of the stirring blades of the same stirring blade group are sleeved with the inner wall of the same guide ring.

Preferably, a helical guide ring is provided on the stirring blade group in the axial direction of the drill rod body, and an inner wall of the guide ring connects an end of at least one of the stirring blades of each stirring blade group.

Preferably, the lengths of the stirring blades are different in the same stirring blade group.

Preferably, the drill bit and the drill rod body are coaxially arranged or eccentrically arranged;

the outer edge of the helical blade is provided with a continuous or discontinuous cutting edge from the position of the minimum radius of the bottom of the helical blade to the position of the maximum radius.

The utility model also provides an improve stake machine of efficiency of drilling down, including foretell stake machine drilling rod.

The utility model has the advantages that: through set up the roller sword on helical blade, make the drilling rod when boring down, when helical blade is rotatory, the roller sword can rotate by oneself with the soil layer friction, and then more easily broken and the stirring with the soil layer, improves and bores efficiency down to helical blade's friction damage can be reduced, helical blade's life is increased.

Drawings

Fig. 1 is a schematic structural view of a drill rod of a pile machine according to an embodiment of the present invention;

fig. 2 is a schematic structural view of another guide ring of the drill rod of the pile machine according to the embodiment of the present invention;

fig. 3 is a schematic structural view of another guide ring of the drill rod of the pile machine according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of another arrangement form of the mixing blade of the drill rod of the pile machine in the embodiment of the present invention;

fig. 5 is a schematic structural diagram of another arrangement form of a drill rod and a drill bit of the pile machine according to the embodiment of the present invention;

fig. 6 is a schematic structural diagram of another arrangement form of the roller cutters on the stirring blades of the drill rod of the pile machine according to the embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the technical solutions of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the utility model discloses a drill rod of a pile machine, which comprises a drill rod body 1 which is vertically arranged and a drill bit 2 which is arranged at one end (lower end) of the drill rod body 1; wherein, drill bit 2 includes main drill bit 21 and the rotor 22 of arranging with main drill bit 21 is coaxial, rotor 22 axial sets up helical blade 3, is equipped with a plurality of roller sword 4 of autogiration when drilling down on the helical blade 3.

In above-mentioned structure, main drill bit 21 is used for drilling out the aperture, and later the helical blade 3 through on the rotor 22 enlarges the aperture, through set up roller sword 4 on helical blade 3, makes the drilling rod when boring down, and when helical blade 3 was rotatory, roller sword 4 can rotate by oneself with the soil layer friction, and then makes the soil layer change and is destroyed, improves and bores efficiency down to can reduce helical blade 3's friction damage, increase helical blade 3's life. In order to support the roller blade 4 to rotate autonomously on the spiral blade 3, a rotating shaft for mounting the roller blade may extend outward from the spiral blade 3. The main drill 21 and the rotator 22 may be integrated, or may be fastened or welded by a fastener.

Certainly, in order to make the utility model discloses a stake machine drilling rod can be applied to the use of cement mixing stake machine, and the body of drilling rod 1 is cavity cylindric (not shown in the figure) to set up the whitewashing mouth (not shown in the figure) that is linked together with the cavity passageway of the body of drilling rod 1 at the tip of main drill bit 21, when the body of drilling rod 1 when rotatory, can follow the whitewashing mouth department of main drill bit 21 and spout mud or cement ash, and mix with earth.

Further, the roller blades 4 are arranged at intervals around the spiral track of the spiral blade 3; preferably, the central axis of the roller blade 4 is perpendicular to the central axis of the helical blade 3. In the present embodiment, the roller blade 4 is preferably a circular blade, and the outer surface of the roller blade 4 is always tangent to the outer side surface of the helical blade 3. When the drilling rod drills down, in the rotating process of the helical blade 3, the roller cutter 4 can rotate along the helical track at the edge of the helical blade 3 to stir soil blocks, so that the soil expanding effect is better, soil is stirred through the roller cutter 4 which preferentially rotates, and the friction damage of the helical blade 3 is reduced.

Furthermore, after the helical blade 3 is used for enlarging and crushing the drilled hole, the soil conveyed by the helical blade 3 and the ejected materials such as mud or cement ash need to be fully stirred, and a plurality of stirring blade groups which are arranged at intervals along the axial direction of the drill rod body 1 are arranged above the helical blade 3 on the drill rod body 1.

Because the length of the stirring blade group is generally longer, in order to avoid the stirring blade group from being subjected to excessive resistance in the stirring process or from colliding with a soil layer which is not crushed by the helical blades in the stirring process to cause the stirring blade group to be broken or bent, preferably, the drilling radius of the drill bit 2 is greater than or equal to the maximum stirring radius of the stirring blade group, so that the stirring blade group can play a sufficient stirring role after the drill bit 2 is expanded.

Further, the stirring blade group comprises more than two stirring blades 5 distributed around the drill rod body 1 at intervals in the circumferential direction, and the length direction of the stirring blades 5 is perpendicular to the central axis of the drill rod body 1.

In the structure, the circumferential interval distribution of the more than two stirring blades 5 on the drill rod body 1 can avoid the condition that the resistance of the soil layer to the stirring blades 5 is uneven in the drilling process, so that the drill rod body 1 is inclined, and the drilled hole can not meet the use requirement.

Besides, preferably, the blade surface of the stirring blade 5 is inclined to the central axis of the drill rod body 1, and when viewed in a front view of the drill rod of the pile machine, at least a part of the blade surface of the stirring blade 5 is inclined downward in a clockwise direction, or at least a part of the blade surface of the stirring blade 5 is inclined downward in a counterclockwise direction. Wherein, stirring vane 5 can be welded on the body of drill rod 1, perhaps outwards extend in the extension of the body of drill rod 1 side laminating mutually at stirring vane 5's tip, and rethread fastener is connected stirring vane 5 and body of drill rod 1 fixedly, and the fastener can be threaded fasteners such as bolt or screw.

In the above structure, since the stirring blade 5 extrudes the soil crushed by the helical blade 3 through the side surface of the stirring blade 5 in the rotating process, so that the soil passes over the stirring blade 5 upwards or downwards through the stirring blade 5, thereby further crushing the soil, in order to obtain better stirring effect for the soil, the blades of the stirring blade 5 are inclined to the central axis of the drill rod body 1, and at least part of the blades of the stirring blade 5 are inclined downwards in a clockwise direction, or at least part of the blades of the stirring blade 5 are inclined downwards in an anticlockwise direction, by the above arrangement, when the stirring blade 5 rotates, the soil can move upwards or downwards for more distance when being extruded by the stirring blade, so that the stirring is more sufficient, besides, because the stirring blade 5 has a certain included angle with the horizontal direction, the stirring blade 5 can easily scoop up the soil on the same plane with the same, the stirring blade 5 is less resistant and the stirring blade 5 is not easy to break.

Furthermore, at least a part of the stirring blades 5 are provided with roller cutters 4, and the central axes of the roller cutters 4 are parallel to the central axis of the drill rod body 1. Through set up roller sword 4 on stirring vane 5 to this stirring effect who improves stirring vane 5, in this embodiment, roller sword 4 sets up the interlude at stirring vane 5, and the surface of roller sword 4 is laminated mutually with stirring vane's blade surface, owing to at stirring vane 5 at the rotation in-process, rubs between roller sword 4 and the earth, and roller sword 4 can revolute rotation of axes by oneself, therefore stirring effect further improves. Of course, as shown in fig. 6, the roller blades 4 of the stirring vanes 5 may be provided at the ends of the blade surfaces of the stirring vanes 5.

As shown in fig. 1, in the present embodiment, at least a part of the stirring blade groups are sleeved with a guide ring 6 in the axial direction of the drill rod body 1, and the end of each stirring blade 5 of the same stirring blade group is sleeved with the inner wall of the same guide ring 6.

In the structure, because the condition of slope takes place easily at the in-process of drilling down for the stake machine drilling rod, thereby can lead to the drilling rod to be damaged easily and the stake quality of after drilling can't obtain guaranteeing, lead to pile body bearing capacity unqualified, consequently cup joint guide ring 6 through setting up on stirring vane group, make the drilling rod at the in-process of drilling down, each guide ring 6 can be along with stirring vane group coaxial rotation, if the in-process of drilling down, the drilling rod takes place the slope, produce the interact power between each guide ring 6 can and the soil layer, impel the drilling rod to keep perpendicularly. Of course, the end portions of the stirring blades 5 of the same stirring blade group are fitted to the inner wall of the same guide ring 6, so that the guide ring 6 is prevented from falling off due to the resistance of the soil when the guide ring 6 rotates with the stirring blade group. Wherein the guide ring 6 and the stirring vane 5 can be connected by welding. The guide ring 6 may be cylindrical. As shown in fig. 2, the guide ring 6 may also be hollow and truncated cone-shaped. Preferably, the height of the guide ring 6 is greater than the thickness of the agitating blade 5. In the present embodiment, 3 stirring blades 5 are uniformly distributed in one stirring blade group, so that the stirring blades 5 can support the guide ring 6, the force applied to the guide ring 6 is uniform, and the guide ring 6 is prevented from being extruded and deformed by soil, or one guide ring may be shared by two or more stirring blade groups.

As shown in fig. 3, the guide ring 6 in this embodiment may have another arrangement, in which the stirring blade groups are provided with a helical guide ring 6 along the axial direction of the drill rod body 1, and the inner wall of the guide ring 6 is connected to the end of at least one of the stirring blades 5 of each stirring blade group. Through the winding of spiral helicine guide ring 6 on each stirring vane group, also can play and make the drilling rod keep vertically effect, simultaneously, spiral helicine guide ring 6 can make earth be extruded by continuous spiral along the inner wall of guide ring 6 at rotatory in-process, makes the stirring effect better. In order to avoid the spiral guide ring 6 from being extruded and deformed by soil, the stirring blades 5 are arranged at intervals along the spiral inner wall of the guide ring 6 and connected to the inner wall of the guide ring 6, and at least 3 stirring blades 5 which are staggered up and down are connected to the inner wall of the spiral guide ring 6 in one circle.

In the above-described embodiment, the lengths of the respective stirring vanes 5 are the same in the same stirring vane group, but of course, the lengths of the respective stirring vanes 5 may be different in the same stirring vane group. As shown in fig. 4, when the lengths of the stirring blades 5 are different, the stirring effects of the stirring blades 5 having different lengths stirring the soil on the same surface are different in the same stirring blade group, so that the stirring effect can be more sufficient. Preferably, among the stirring blades adjacent to each other, the stirring blades having a longer length and the stirring blades having a shorter length are arranged in a staggered manner.

In the present embodiment, the drill bit 2 and the drill rod body 1 are coaxially arranged, and certainly, the drill bit 2 and the drill rod body 1 may be eccentrically arranged, as shown in fig. 5, an end portion of the drill rod body 1 may be radially outwardly expanded to form an expansion disc, and then the expansion disc is connected and fixed with the rotating body 22 of the drill bit 2 through a fastener, so that the drill bit 2 and the drill rod body are eccentrically arranged.

In the arrangement mode between the drill bit 2 and the drill rod body 1, under the condition that the sizes of the main drill bit 21 and the helical blade 3 are not changed, when the drill rod body 1 rotates, the gyration radius of the main drill bit 21 and the helical blade 3 arranged on the rotator 22 is larger, the produced soil spreading effect is better, and the cost of the drill bit is saved.

Meanwhile, since the roller blade 4 is arranged on the helical blade 3, and the roller blade 4 can rotate autonomously, the roller blade 4 is subjected to a large resistance in the drilling process, so that the roller blade 4 and the rotating shaft of the helical blade 3 need to be thicker, the helical blade 3 is thicker, and such arrangement results in a poor soil spreading effect and low drilling efficiency of the helical blade 3, and in order to improve the soil spreading effect and the drilling efficiency of the helical blade 3 and reduce the friction damage of the helical blade 3, a continuous or intermittent cutting edge (not shown in the figure) is arranged at the outer edge of the helical blade 3 from the minimum radius to the maximum radius of the bottom of the helical blade 3. Of course, the roller knife 4 can also be provided with continuous or interrupted cutting edges.

The diameter of the helical blade 3 in this embodiment is not changed in the axial direction, and of course, the diameter of the helical blade 3 may be gradually decreased from top to bottom, so that the drilling efficiency can be improved.

The utility model also discloses a stake machine of including above-mentioned stake machine drilling rod.

The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is defined by the scope defined by the claims, and a plurality of modifications and decorations made by those skilled in the art without departing from the spirit and scope of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A drill rod of a pile machine is characterized by comprising a drill rod body (1) and a drill bit (2) arranged at one end of the drill rod body (1);

wherein drill bit (2) include main drill bit (21) and with rotor (22) of main drill bit (21) coaxial arrangement, rotor (22) axial sets up helical blade (3), is equipped with a plurality of roller sword (4) of autogiration when drilling down on helical blade (3).

2. The piling machine drill rod of claim 1, characterized in that the roller cutters (4) are spaced around the helical track of the helical blade (3);

preferably, the central axis of the roller blade (4) is perpendicular to the central axis of the helical blade (3).

3. The pile machine drill rod according to claim 1, characterized in that the drill rod body (1) is provided with a plurality of stirring blade groups arranged at intervals along the axial direction of the drill rod body (1) above the helical blades (3);

4. The pile machine drill rod according to claim 3, characterized in that the stirring blade group comprises more than two stirring blades (5) which are circumferentially distributed around the drill rod body (1) at intervals, and the length direction of the stirring blades (5) is perpendicular to the central axis of the drill rod body (1);

preferably, the blade surface of the stirring blade is inclined to the central axis of the drill rod body (1), and when viewed in a front view direction of the drill rod of the pile machine, at least part of the blade surface of the stirring blade (5) is inclined downwards in a clockwise direction, or at least part of the blade surface of the stirring blade (5) is inclined downwards in a counterclockwise direction.

5. The pile machine drill rod according to claim 4, characterized in that at least some of the stirring blades (5) are provided with roller cutters (4), the central axes of the roller cutters (4) being parallel to the central axis of the drill rod body (1).

6. The drill rod of the pile machine according to claim 4 or 5, characterized in that at least a part of the number of the mixing blade groups is sleeved with a guide ring (6) along the axial direction of the drill rod body (1), and the end of each mixing blade (5) of the same mixing blade group is sleeved with the inner wall of the same guide ring (6).

7. The pile machine drill rod according to claim 4 or 5, characterized in that a helical guide ring (6) is arranged on the stirring blade group along the axial direction of the drill rod body (1), and the inner wall of the guide ring (6) is connected with the end of at least one stirring blade (5) of each stirring blade group.

8. The pile driver drill rod as claimed in claim 4 or 5, characterized in that the mixing blades (5) differ in length in the same mixing blade group.

9. The pile machine drill rod according to claim 1, characterized in that the drill bit (2) is arranged coaxially or eccentrically to the drill rod body (1);

the outer edge of the spiral blade (3) is provided with a continuous or discontinuous cutting edge from the minimum radius position to the maximum radius position of the bottom of the spiral blade (3).

10. A pile machine, characterized in that it comprises a pile machine drill rod according to any one of claims 1-9.