CN213928248U - Stirring pile drill bit - Google Patents

Abstract

The utility model belongs to the field of building construction, and discloses a stirring pile drill bit, which comprises a drill rod, helical blades, internal teeth and external teeth, wherein the helical blades are fixedly arranged on the drill rod, and the helical blades are provided with a rotating front end and a rotating side end; the inner teeth are multiple and are respectively and fixedly arranged on the rotating front end and the rotating side end; the internal cavity of external tooth, the external tooth is provided with a plurality ofly, and external tooth detachably suit is on the internal tooth. The utility model discloses a stirring stake drill bit has a plurality of internal teeth in rotatory front end and rotatory side welding, selects suitable outer tooth suit on the internal tooth according to the stratum of different grade type, makes this stirring stake drill bit be applicable to multiple soil property, can effectively guarantee the brill footpath of stirring stake. In addition, because outer tooth detachably suit is on the inner tooth, can be timely when stirring stake drill bit outer tooth damages change the outer tooth, need not change whole drill bit, saved the cost.

Description

Stirring pile drill bit

Technical Field

The utility model relates to a construction equipment technical field especially relates to a stirring stake drill bit.

Background

In the field of building construction, a triaxial Mixing pile and a Soil Mixing Wall (Soil Mixing Wall) are common construction processes at present, and essentially the three spiral drill rods are used for simultaneously constructing downwards, cement is sprayed into a Soil body by using a Mixing pile machine and is fully mixed, so that soft Soil is hardened, and the strength of a foundation is improved. The quality of the reinforcing body is mainly determined by the diameter of the reinforced pile body, if the diameter of the pile body does not meet the design requirement, the reinforcing body is split, and when the reinforcing body is used as an enclosure structure, the enclosure structure can leak water, gush water and gush sand or even collapse due to insufficient pile diameter, so that great quality defects and potential safety hazards are generated. And the mixing pile shrinkage cavity is not shrinkage cavity in all strata, the large head of the drill bit cannot be singly increased, otherwise, the situation that the drill bit is too large in the muddy soil is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stirring stake drill bit is applicable to multiple soil property, can effectively guarantee the brill footpath of stirring stake, and the cost is saved to the whole drill bit of unnecessary change during the damage.

To achieve the purpose, the utility model adopts the following technical proposal:

a stir pile drill bit, comprising:

a drill stem;

the spiral blade is fixedly arranged on the drill rod and is provided with a rotary front end and a rotary side end;

a plurality of internal teeth which are fixedly mounted on the rotating front end and the rotating side end respectively; and

the inner teeth are hollow, the outer teeth are provided with a plurality of parts, and the outer teeth are detachably sleeved on the inner teeth.

The fastener is further included, a first mounting hole is formed in the inner tooth, and the first mounting hole penetrates through the inner tooth along the thickness direction of the inner tooth; the outer teeth are provided with second mounting holes, the second mounting holes penetrate through the outer teeth in the thickness direction of the outer teeth, and the fasteners penetrate through the first mounting holes and the second mounting holes to enable the outer teeth to be sleeved on the inner teeth.

Further, the internal teeth include front end internal teeth and side end internal teeth, the front end internal teeth fixed connection in the rotatory front end, side end internal teeth fixed connection in the rotatory side end.

Further, the side end internal teeth are provided at regular intervals in the rotational direction of the rotational side end.

Further, the outer teeth include front-end outer teeth detachably mounted on the front-end inner teeth and side-end outer teeth detachably mounted on the side-end inner teeth.

Further, the side end external teeth are triangular external teeth or barb type external teeth.

Furthermore, a slope is arranged at one end, away from the rotating front end, of the front end outer teeth, and the inclination angle of the slope ranges from 40 degrees to 50 degrees.

Further, the length size range of the inner teeth is 5.5cm-6.5cm, the width size range is 2.5cm-3.5cm, and the thickness size range is 1cm-2 cm.

Furthermore, the number of the helical blades is multiple, each helical blade is arranged around the drill rod by 180 degrees, two helical blades are oppositely arranged in the same horizontal direction, and the helical blades are arranged at intervals in the vertical direction.

Further, the material of the internal teeth is welding steel.

The utility model has the advantages that: the utility model discloses a stirring stake drill bit has a plurality of internal teeth in rotatory front end and rotatory side welding, selects suitable outer tooth suit on the internal tooth according to the stratum of different grade type, makes this stirring stake drill bit be applicable to multiple soil property, can effectively guarantee the brill footpath of stirring stake. In addition, because outer tooth detachably suit is on the inner tooth, can be timely when stirring stake drill bit outer tooth damages change the outer tooth, need not change whole drill bit, saved the cost.

Drawings

FIG. 1 is a schematic view of a portion of a mixing pile drill according to an embodiment of the present invention;

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

fig. 3 is a schematic structural view of an internal tooth according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a triangular external tooth according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a barb type external tooth according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a combination arrangement of triangular external teeth and barb external teeth according to an embodiment of the present invention;

FIG. 7 is a schematic view of a portion of the drill bit without external teeth according to an embodiment of the present invention;

fig. 8 is a schematic view of a partial structure of a drill bit when the external teeth are sleeved according to an embodiment of the present invention.

In the figure:

1. a drill stem;

2. a helical blade; 21. rotating the front end; 22. a rotating side end;

3. internal teeth; 31. front-end internal teeth; 32. side end internal teeth;

4. an outer tooth; 41. front end external teeth; 42. side end external teeth.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts throughout, or parts having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and can include, for example, fixed or removable connections, mechanical or electrical connections, direct connections, indirect connections through an intermediary, communication between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include both the first and second features being in direct contact, and may also include the first and second features being in contact, not in direct contact, but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1-8, the utility model provides a mixing pile drill bit, including drilling rod 1, helical blade 2, internal tooth 3 and external tooth 4. The helical blade 2 is fixedly arranged on the drill rod 1, and the helical blade 2 is provided with a rotary front end 21 and a rotary side end 22; a plurality of internal teeth 3 are arranged, and the plurality of internal teeth 3 are respectively fixedly arranged on the rotating front end 21 and the rotating side end 22; the outer teeth 4 are hollow inside, a plurality of outer teeth 4 are arranged, and the outer teeth 4 are detachably sleeved on the inner teeth 3. In the present embodiment, the internal teeth 3 include front-end internal teeth 31 and side-end internal teeth 32, the front-end internal teeth 31 are fixedly connected to the rotation front end 21, and the side-end internal teeth 32 are fixedly connected to the rotation side end 22 (as shown in fig. 7). The inner teeth 3 are made of welding steel or other steel material having weldability and are fixed to the rotating tip 21 or the rotating side end 22 by welding. The external teeth 4 include front-end external teeth 41 and side-end external teeth 42, the front-end external teeth 41 being detachably attached to the front-end internal teeth 31, and the side-end external teeth 42 being detachably attached to the side-end internal teeth 32. When in use, the external teeth 4 with proper shapes are selected to be sleeved on the internal teeth 3. Besides the above, it is also possible to provide only the front end internal teeth 31 at the rotation front end 21 or only the side end internal teeth 32 at the rotation side end 22, and then to sleeve the front end internal teeth 31 or the side end internal teeth 32 with the corresponding front end external teeth 41 and side end external teeth 42, and in this embodiment, it is preferable to provide the corresponding front end internal teeth 31 and side end internal teeth 32 at both the rotation front end 21 and the rotation side end 22.

Specifically, the fastener is further included, a first mounting hole is formed in the inner teeth 3, and the first mounting hole penetrates through the inner teeth 3 along the thickness direction of the inner teeth 3; be provided with the second mounting hole on the external tooth 4, the second mounting hole runs through external tooth 4 along 4 thickness directions of external tooth, and the fastener passes first mounting hole and second mounting hole, with external tooth 4 suit on internal tooth 3. In this embodiment, the fastener is preferably a pin shaft, and after the outer teeth 4 are sleeved on the inner teeth 3, the first mounting hole and the second mounting hole correspond to each other one by one, and the worker inserts the pin shaft of the fastener into the first mounting hole and the second mounting hole by means of a tool, so that the outer teeth 4 are fixedly connected with the inner teeth 3, and the above manner is repeated when the outer teeth 4 are removed and replaced. Preferably, the length of the pin of the fastener is slightly greater than the thickness of the outer teeth 4, so that the fastener can be conveniently mounted and dismounted.

Specifically, the side end internal teeth 32 are uniformly spaced along the rotation direction of the rotation side end 22, as shown in fig. 1, a plurality of side end internal teeth 32 are uniformly arranged on the rotation side end 22, so that the stress is uniform, and the overall stability of the mixing pile drill bit is improved.

Specifically, the side-end external teeth 42 are triangular external teeth or barbed external teeth. Fig. 4 shows triangular outer teeth, and fig. 5 shows barbed outer teeth. In the present embodiment, the corresponding side end external teeth 42 are selected for different geology, the barbed type external teeth are preferable in sandy land, the triangular type external teeth are preferable in silt land, and the post diameter after completion of construction is kept constant according to the circumstances, and the barbed type external teeth and the triangular type external teeth may be provided in combination, and as shown in fig. 6 or 8, the barbed type external teeth are preferable for the side end external teeth 42 near the rotation tip 21, and the triangular type external teeth are preferable for the remaining side end external teeth 42, which is advantageous in enlarging the cutting surface.

Specifically, a slope is arranged on one end of the front end external teeth 41 far away from the rotating front end 21, and the inclination angle of the slope ranges from 40 degrees to 50 degrees. In this embodiment, as shown in fig. 8, it is most economically reasonable that the inclination angle of the front end slope of the rotating front end 21 is preferably 45 °.

Specifically, the length dimension of the internal teeth 3 ranges from 5.5cm to 6.5cm, the width dimension ranges from 2.5cm to 3.5cm, and the thickness dimension ranges from 1cm to 2 cm. In the present embodiment, the internal teeth 3 are rectangular solids as a whole, and the internal teeth 3 preferably have a length dimension of 6cm, a width dimension of 3cm, and a thickness dimension of 1.5 cm.

Specifically, the helical blade 2 is provided with a plurality of helical blades 2, each helical blade 2 is arranged around the drill rod by 180 degrees, two helical blades 2 are oppositely arranged in the same horizontal direction, and the helical blades 2 are arranged at intervals in the vertical direction. In the present embodiment, as shown in fig. 2, preferably, two helical blades 2 are disposed in the same horizontal area on the drill rod 1, the two helical blades 2 are disposed in a staggered manner, the two rotating front ends 21 of the two helical blades 2 are on the same horizontal plane and have an included angle of 180 degrees on both sides of the drill rod 1, each helical blade 2 is spirally wound on the drill rod by 180 degrees, and a plurality of helical blades 2 may also be disposed in the vertical direction, and adjacent helical blades 2 are disposed in parallel and at intervals (not shown in the drawings), so that the mixing pile drill bit operates stably.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An agitator pile drill bit, comprising:

a drill rod (1);

the spiral blade (2) is fixedly arranged on the drill rod (1), and a rotary front end (21) and a rotary side end (22) are arranged on the spiral blade (2);

a plurality of internal teeth (3), wherein the internal teeth (3) are fixedly arranged on the rotating front end (21) and the rotating side end (22) respectively; and

the inner tooth (3) is detachably sleeved on the outer tooth (4), the inner part of the outer tooth (4) is hollow, the outer tooth (4) is provided with a plurality of teeth, and the inner tooth (3) is detachably sleeved on the outer tooth (4).

2. The mixing pile drill bit according to claim 1, characterized by further comprising a fastener, wherein a first mounting hole is formed in the inner tooth (3), and the first mounting hole penetrates through the inner tooth (3) along the thickness direction of the inner tooth (3); and a second mounting hole is formed in the outer tooth (4), the second mounting hole penetrates through the outer tooth (4) along the thickness direction of the outer tooth (4), the fastener penetrates through the first mounting hole and the second mounting hole, and the outer tooth (4) is sleeved on the inner tooth (3).

3. Mixing pile drill according to claim 1, characterized in that the inner teeth (3) comprise front inner teeth (31) and side inner teeth (32), the front inner teeth (31) being fixedly connected to the rotary front end (21) and the side inner teeth (32) being fixedly connected to the rotary side end (22).

4. Mixing pile drill according to claim 3, characterized in that the side end internal teeth (32) are evenly spaced in the direction of rotation of the rotational side end (22).

5. Mixing pile bit according to claim 3, characterized in that the outer teeth (4) comprise front end outer teeth (41) and side end outer teeth (42), the front end outer teeth (41) being detachably mounted on the front end inner teeth (31) and the side end outer teeth (42) being detachably mounted on the side end inner teeth (32).

6. Mixing pile drill bit according to claim 5, characterized in that the side end external teeth (42) are triangular or barbed external teeth.

7. Mixing pile drill bit according to claim 5, characterized in that the end of the front end outer teeth (41) remote from the rotating front end (21) is provided with a ramp with an angle of inclination in the range of 40 ° -50 °.

8. Mixing pile drill bit according to any of claims 1-7, characterized in that the inner teeth (3) have a length dimension in the range of 5.5cm-6.5cm, a width dimension in the range of 2.5cm-3.5cm and a thickness dimension in the range of 1cm-2 cm.

9. Mixing pile drill bit according to any one of claims 1-7, characterized in that the helical blade (2) is provided in plurality, each helical blade (2) being arranged 180 ° around the drill rod (1), two helical blades (2) being arranged opposite each other in the same horizontal direction, a plurality of helical blades (2) being arranged at intervals in the vertical direction.

10. Mixing pile drill according to any of claims 1-7, characterized in that the material of the inner teeth (3) is welded steel.

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