CN211492285U - Drill bit for drilling concrete structure embedded steel bars - Google Patents

Abstract

The utility model provides a drill bit for concrete structure bar planting drilling, including drill bit portion, pole somatic part and supplement the piece, drill bit portion with pole somatic part is connected, it locates to supplement the piece on the pole somatic part, just supplement the piece protrusion the surface setting of pole somatic part. The utility model discloses an installation augments the piece on the pole somatic part of drill bit, utilizes the augments piece to drill out the recess in the main hole, is difficult for the adhesion gray membrane in the recess on the one hand, and then can not influence the bonding between the bar planting glue in the recess and the concrete face, and on the other hand, recess place position department can hold more ground bar planting and glue, and then increases the bonding strength between implantation bar and the building.

Description

Drill bit for drilling concrete structure embedded steel bars

Technical Field

The utility model relates to a construction technical field particularly, relates to a drill bit for concrete structure bar planting drilling.

Background

With the development of the bar planting technology, the application of the bar planting technology in the building engineering is more and more extensive. The bar planting technology is a connecting and anchoring technology aiming at a concrete structure, generally, holes are drilled in a concrete building according to design requirements, bar planting glue is injected into the holes, and then steel bars are driven into the holes, so that the concrete, the bar planting glue and the steel bars are fixedly connected into a whole, and the overall strength of the building is improved.

The quality of the planted bars is particularly important due to the irreplaceability of the planted bars and the requirement of structural durability. In the conventional bar planting drilling, the drilled hole is generally a linear hole. In order to meet the strength of the embedded steel bars, the requirement on the depth of the drilled hole is high. After drilling and cleaning in an area with a complex construction environment, such as a construction area with large dust, a dust film is easily attached to the hole wall due to the large dust in the environment, which causes great difficulty in hole cleaning operation and influences the construction progress; meanwhile, the adhesive strength between the bar planting glue and the concrete surface is greatly reduced by the gray film, so that the bar planting cannot reach the designed drawing force.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem be that the planting muscle hole that current drill bit drilled out is clear the hole degree of difficulty great under complicated construction environment, and is difficult for satisfying the planting muscle atress requirement.

In order to solve at least one aspect among the above-mentioned problem, the utility model provides a drill bit for concrete structure bar planting drilling, including drill bit portion, pole somatic part and supplement the piece, drill bit portion with pole somatic part is connected, it locates to supplement the piece on the pole somatic part, just supplement the piece protrusion the surface setting of pole somatic part.

Preferably, the supplementary block is detachably connected to the shaft portion.

Preferably, the supplementary block comprises a block body, and the block body is in threaded connection with the rod body.

Preferably, a threaded hole is formed in the rod body, and an external thread matched with the threaded hole is formed in the outer wall of the block body.

Preferably, the supplementary block further comprises a block head part, the block head part is fixedly connected with the block body, and the block head part is a conical block.

Preferably, one end of the block body is connected with the rod body, and the end face of the other end of the block body is provided with sawteeth.

Preferably, the threaded hole extends along the radial direction of the rod body part, and the depth of the threaded hole is smaller than or equal to the radius of the rod body part.

Preferably, the number of the supplementary blocks is plural, two or more supplementary blocks are connected to form a straight line parallel to the axis of the shaft portion on the shaft portion, or two or more supplementary blocks are spirally distributed on the outer circumference of the shaft portion on the shaft portion.

Preferably, the axis of the supplementary mass is arranged perpendicular to the axis of the shaft portion.

Preferably, the supplement block is connected with the rod body part in a high-frequency welding mode.

The utility model provides a drill bit for concrete structure bar planting drilling compares with prior art, and the beneficial effect who has is as follows:

the installation increases the benefit piece on the shaft body portion of drill bit, utilizes to increase the benefit piece and drills out the recess in the downthehole that has bored, and the difficult adhesion gray membrane in the recess on the one hand, and then can not influence the bond between the bar planting glue in the recess and the concrete face, and on the other hand, recess position department can hold more places bar planting glue, and then increases the bonding strength between implantation reinforcing bar and the building.

Drawings

Fig. 1 is a schematic view of a partial explosion of a drill bit structure for drilling a steel bar for a concrete structure in an embodiment of the present invention;

fig. 2 is a structural diagram of a drill for drilling a steel bar for a concrete structure in an embodiment of the present invention;

FIG. 3 is a diagram of an embodiment of the present invention;

fig. 4 is a schematic view of a partial explosion of a drill bit structure for drilling steel bar for concrete structure in another embodiment of the present invention;

fig. 5 is a structural view of a drill for bar-planting drilling of a concrete structure according to another embodiment of the present invention;

fig. 6 is a schematic diagram of the process of drilling the groove by the drill bit for drilling the steel bar for the concrete structure in the embodiment of the present invention;

fig. 7 is the embodiment of the utility model provides an in the embodiment of the structure sketch map after the drill bit that is used for concrete structure bar planting drilling drills to get the recess.

Description of reference numerals:

1-a drill head; 2-a shaft portion; 3-a supplementary block; 4-a main hole; 5-auxiliary hole

21-a threaded hole; 31-a block body; 32-block head; 33-saw teeth; 41-groove.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 1 and 2, an embodiment of the present invention provides a drill for drilling a steel bar for a concrete structure, including a drill bit portion 1, a rod portion 2 and an supplement block 3, wherein the supplement block 3 is installed on the rod portion 2, and the supplement block 3 protrudes out of the outer surface of the rod portion 2.

When the drill provided by the embodiment is used, the tail end of the rod body 2 is connected with a drilling machine, the drill is inserted into a drilled straight hole on a building, the drilling machine is started, the drill rotates, and the reinforcing block 3 on the rod body 2 can expand a circle of groove 41 on the wall of the drilled hole (hereinafter referred to as a main hole) because the reinforcing block 3 protrudes out of the outer surface of the rod body 2. It will be appreciated that, since the supplementary block 3 protrudes from the outer surface of the shank portion 2, when the drill is placed in the main hole 4, as shown in fig. 6, it is necessary to drill a sub-hole 5 for placing the supplementary block 3 in advance beside the main hole 4. The depth of insertion of the drill into the main bore 4 is varied and a plurality of recesses 41 can be reamed at different locations within the main bore 4. From this, when injecting the bar planting glue into main hole 4, recess 41 position department can hold more bar planting glues, and then increases the bonding strength between the reinforcing bar of driving into and the building. On the other hand, the grey film is not easy to adhere in the groove 41, so that the bonding between the bar planting glue in the groove 41 and the concrete surface is not influenced, and the drawing force of the implanted steel bar is improved.

The embodiment arranges the supplement block 3 on the rod body part 2, and is beneficial to arranging a plurality of supplement blocks 3 on the rod body part 2. Thus, the drill bit is arranged in the main hole 4, a plurality of grooves 41 with different positions can be drilled in the main hole 4 at the same time, the drilling is not required to be stopped, the drill bit is used for drilling again after the depth of the drill bit in the main hole 4 is changed, and therefore the drilling efficiency is improved.

The additional block 3 is detachably connected to the rod body 2, so that the additional block 3 can be replaced as required, and the use range of the drill bit is expanded. Preferably, the supplementary block 3 includes a block body 31, the block body 31 is threadedly coupled to the rod portion 2, an external thread is provided at an end of the block body 31, a screw hole 21 is provided on the rod portion 2, and the block body 31 is inserted into the screw hole 21 to mount the supplementary block 3 on the rod portion 2. Of course, the supplementary block 3 may be fixedly connected to the rod portion 2 to improve the connection strength between the supplementary block 3 and the rod portion 2, and preferably, the supplementary block 3 is connected to the rod portion 2 by high frequency welding.

Optionally, the supplementary block 3 further includes a block head 32, the block head 32 is integrally connected with the block body 31, and the block head 32 is a conical block. In this way, as the drill bit rotates, the block head 32 flares out a groove 41 on the inner wall of the main bore 4. Preferably, the supplement block 3 is made of high strength alloy steel to secure the strength of the supplement block 3.

Alternatively, as shown in fig. 3, one end of the block body 31 is connected to the lever body 2, and the end surface of the other end of the block body 31 is provided with serrations 33. The setting of sawtooth 33 for when the drill bit was rotatory, increase and mend piece 3 and expand multichannel recess 41 on 4 inner walls of king-hole, increase the roughness of 4 pore walls of king-hole from this, increase the adhesion force of bar planting glue in king-hole 4, and then improve the pulling force of implanting the reinforcing bar.

Further, the depth of screw hole 21 is not more than the radius of shaft body portion 2 to guarantee to set up the intensity of shaft body portion 2 of screw hole 21 department, prevent because of too big causing shaft body portion 2 fracture in setting up screw hole 21 department of screw hole 21 degree of depth. Wherein the depth of the threaded hole 21 refers to the dimension of the threaded hole 21 in the radial direction. It will be appreciated that the bore of the threaded bore 21 matches the diameter of the block body 31. Preferably, the depth of the threaded hole 21 is equal to the radius of the shank portion 2, so that the strength of the shank portion 2 is secured while the strength of the connection between the supplement block 3 and the shank portion 2 is improved.

The depth of the expanded groove 41 is determined by the length of the part of the reinforcing block 3 protruding out of the outer wall of the rod body part 2, and then the depth of the groove 41 is determined, when the groove 41 with the larger depth is drilled in the main hole 4, the depth of the reinforcing block 3 inserted into the rod body part 2 can be reduced, but the connection strength of the reinforcing block 3 and the rod body part 2 can be reduced in the mode, the preferred mode is that the reinforcing block 3 with the longer length is installed on the rod body part 2, and therefore various requirements of users can be met by replacing the reinforcing block 3. When it is desired to drill a groove 41 of a smaller depth into the main bore 4, the insertion depth of the supplement block 3 into the shaft portion 2 may be increased, but this may reduce the overall strength of the shaft portion 2, preferably by mounting a supplement block 3 of a shorter length on the shaft portion 2. In this embodiment, the mode of supplementing piece 3 and 2 threaded connection of shaft body is convenient for change according to actual demand and is supplemented piece 3, has enlarged the application range of drill bit.

According to the actual construction situation, a plurality of the supplement blocks 3 can be selectively arranged, for example, grooves 41 need to be drilled at a plurality of positions in a deeper hole, two or more than two supplement blocks 3 can be arranged on the rod body 2, and the positions of the two or more than two supplement blocks 3 on the rod body 2 are connected into a straight line parallel to the axis of the rod body 2, or are spirally arranged on the outer circumference of the rod body 2. As shown in fig. 4 and 5, in this embodiment, two supplementary blocks 3 are preferably disposed on the outer wall of the rod body 2 at intervals along the length direction of the rod body 2.

Preferably, the axis of the supplementary block 3 is arranged perpendicular to the axis of the shaft portion 2, so that the force of the supplementary block 3 acting on the inner wall of the main hole 4 is increased, the groove 41 is drilled more quickly, and the drilling efficiency is improved.

As shown in fig. 7, when the drill bit for drilling steel bar planting in concrete structure provided by the present embodiment is used for drilling, a groove 41 can be drilled in the main hole 4, and a channel groove is formed in the main hole 4 due to the arrangement of the saw teeth 33 on the block head 32 or the block body 31, so that the connection strength between the steel bar planting glue and the implanted steel bar is increased, and further the pulling force of the steel bar is improved.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.

Claims (10)

1. The drill bit for drilling the steel bar planting hole of the concrete structure is characterized by comprising a drill bit part (1), a rod body part (2) and an additional block (3), wherein the drill bit part (1) is connected with the rod body part (2), the additional block (3) is arranged on the rod body part (2), and the additional block (3) protrudes out of the outer surface of the rod body part (2).

2. The drill for drilling a steel bar for a concrete structure according to claim 1, wherein the supplementary block (3) is detachably connected to the shank portion (2).

3. The drill bit for drilling a steel bar for a concrete structure according to claim 2, wherein the supplementary block (3) comprises a block body (31), and the block body (31) is in threaded connection with the rod body part (2).

4. The drill bit for drilling the steel bar planting hole of the concrete structure according to claim 3, wherein a threaded hole (21) is formed in the rod body portion (2), and an external thread matched with the threaded hole (21) is formed in the outer wall of the block body (31).

5. The drill bit for drilling a steel bar planting hole of a concrete structure according to claim 3, wherein the supplementary block (3) further comprises a block head (32), the block head (32) is fixedly connected with the block body (31), and the block head (32) is a conical block.

6. The drill for concrete structure bar-planting drilling according to claim 3, wherein one end of the block body (31) is connected with the rod body portion (2), and the end surface of the other end of the block body (31) is provided with saw teeth (33).

7. The drill bit for drilling steel planting of a concrete structure according to claim 4, wherein the threaded hole (21) is arranged along the radial extension of the rod body part (2), and the depth of the threaded hole (21) is less than or equal to the radius of the rod body part (2).

8. The drill for concrete structure bar-planting drilling according to claim 1, wherein the number of the supplementary blocks (3) is plural, two or more of the supplementary blocks (3) are connected to the shaft body (2) at positions parallel to the axis of the shaft body (2) in a straight line, or two or more of the supplementary blocks (3) are spirally distributed on the outer circumference of the shaft body (2) at positions on the shaft body (2).

9. The drill for drilling a bar planting hole of a concrete structure according to claim 1, wherein the axis of the supplementary block (3) is perpendicular to the axis of the rod body part (2).

10. The drill bit for drilling the steel bar planting hole of the concrete structure according to claim 1, wherein the supplementary block (3) is connected with the rod body part (2) in a high-frequency welding mode.

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