CN215632770U

CN215632770U - Drill bit of cast-in-situ bored pile

Info

Publication number: CN215632770U
Application number: CN202121426128.6U
Authority: CN
Inventors: 陈友红
Original assignee: Shanghai Eye Construction Engineering Group Co ltd
Current assignee: Shanghai Eye Construction Engineering Group Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-01-25
Anticipated expiration: 2031-06-25

Abstract

The utility model discloses a drill bit for a cast-in-situ bored pile, which comprises a drill bit body, wherein a movable groove is formed in the drill bit body, the bottom in the movable groove is movably connected with a rotating shaft, the outer surface of the rotating shaft is fixedly connected with a first bevel gear, the inner side wall of the movable groove is movably connected with a screw rod, one end, far away from the inner side wall of the movable groove, of the screw rod is fixedly connected with a second bevel gear, the outer surface of the screw rod is in threaded connection with a sliding plate, and one side, far away from the second bevel gear, of the sliding plate is fixedly connected with a scraping drill rod. According to the utility model, the rotary shaft is controlled by the knob to drive the first bevel gear to rotate, and the screw rod is driven by the second bevel gear to rotate, so that the sliding plate is controlled to drive the scraping drill rod to move, and the scraping drill rod is moved out, thereby improving the drilling diameter of the drill bit body, avoiding the replacement of the drill bit in the use process, and being beneficial to improving the working efficiency of workers.

Description

Drill bit of cast-in-situ bored pile

Technical Field

The utility model relates to the technical field of drill bit equipment, in particular to a drill bit of a cast-in-situ bored pile.

Background

The cast-in-place pile is a pile formed by forming a pile hole in foundation soil through mechanical drilling, steel pipe soil extrusion or manual excavation and the like on an engineering site, placing a reinforcement cage and cast-in-place concrete in the pile hole, and according to different hole forming methods, the cast-in-place pile can be divided into a immersed tube cast-in-place pile, a cast-in-place pile and a cast-in-place pile.

The diameter of the hole that the drill bit on the existing market bored at every turn all is certain, when needing bigger hole, often need to change the bigger drill bit of diameter, but the change of drill bit is more troublesome, influences work efficiency easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a drill bit for a cast-in-situ bored pile.

In order to achieve the purpose, the utility model adopts the following technical scheme: a drill bit for a bored pile comprises a drill bit body, wherein a movable groove is formed in the drill bit body, a rotating shaft is movably connected to the inner bottom of the movable groove, a first bevel gear is fixedly connected to the outer surface of the rotating shaft, a lead screw is movably connected to the inner side wall of the movable groove, a second bevel gear is fixedly connected to one end, away from the inner side wall of the movable groove, of the lead screw, a sliding plate is in threaded connection with the outer surface of the lead screw, a scraping drill rod is fixedly connected to one side, away from the second bevel gear, of the sliding plate, one end, away from the sliding plate, of the scraping drill rod extends to the outer side of the drill bit body, an extrusion groove is formed in the rotating shaft, a limiting plate is movably connected to the interior of the extrusion groove, a sliding rod is fixedly connected to the upper surface of the limiting plate, one end, away from the limiting plate, of the sliding rod extends to the upper side of the drill bit body and is fixedly connected with a knob, and limiting grooves are formed in the rotating shaft and positioned on two sides of the extrusion groove, the side surface of the limiting plate is fixedly connected with a limiting block, and one side of the limiting block, which is far away from the limiting plate, extends into the limiting groove;

the surface of slide bar is provided with compression spring, compression spring's one end and limiting plate fixed connection, compression spring keeps away from the one end of limiting plate and the interior top fixed connection in extrusion groove, the lower fixed surface of knob is connected with the locating lever, the locating hole has been seted up to the inside of drill bit body and the top that is located the activity groove.

As a further description of the above technical solution:

the drill bit comprises a drill bit body and is characterized in that a conical drill block is fixedly connected to the lower surface of the drill bit body, an inclined blade is fixedly connected to the side surface of the drill bit body, and a fixing rod is fixedly connected to the upper surface of the drill bit body.

As a further description of the above technical solution:

the rotating shaft is movably connected with the inner bottom of the movable groove through a bearing seat, and the first bevel gear is meshed with the second bevel gear.

As a further description of the above technical solution:

the sliding plate is matched with the movable groove and is in sliding connection with the movable groove.

As a further description of the above technical solution:

the limiting block is matched with the limiting groove and is in sliding connection with the limiting groove.

As a further description of the above technical solution:

the number of the positioning holes is provided with a plurality of positioning holes, and the positioning holes are distributed below the knob in an annular array.

As a further description of the above technical solution:

the positioning rod is matched with the positioning hole, and anti-skid grains are arranged on the outer surface of the knob.

As a further description of the above technical solution:

the number of the scraping drill rods is multiple and the scraping drill rods are uniformly distributed on the sliding plate.

The utility model has the following beneficial effects:

1. compared with the prior art, this bored concrete pile drill bit drives first awl tooth through knob control pivot and rotates to drive the lead screw through second awl tooth and rotate, thereby control slide drives scrapes gets the drilling rod and removes, and will scrape and get the drilling rod and shift out, so that improve the drilling diameter of drill bit body, avoid changing the drill bit at the in-process that uses, be favorable to improving staff's work efficiency.

2. Compared with the prior art, this drilling bored concrete pile drill bit drives the slide bar through the elasticity control limiting plate that utilizes compression spring and moves down to insert the locating lever in the locating hole, be used for fixing the pivot, thereby fix the lead screw, avoid the drill bit body to scrape at the in-process that uses and get the drilling rod and take place to remove.

Drawings

Fig. 1 is a schematic view of an internal structure of a drill for a bored pile according to the present invention;

FIG. 2 is a schematic view of an internal structure of a rotating shaft of a drill bit for a bored pile according to the present invention;

FIG. 3 is a schematic view of the structure A of FIG. 1 according to the present invention;

fig. 4 is a top view of a bored pile drill according to the present invention;

fig. 5 is a schematic structural diagram of a sliding plate of a drill bit of a bored pile according to the present invention.

Illustration of the drawings:

1. a drill bit body; 2. a movable groove; 3. a rotating shaft; 4. a first bevel gear; 5. a screw rod; 6. a second taper tooth; 7. a slide plate; 8. scraping the drill rod; 9. extruding a groove; 10. a limiting plate; 11. a slide bar; 12. a knob; 13. a limiting groove; 14. a limiting block; 15. positioning a rod; 16. positioning holes; 17. a compression spring; 18. fixing the rod; 19. a conical drill block; 20. the blade is tilted.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 5, the present invention provides a drill for cast-in-situ bored pile: comprises a drill bit body 1, a movable groove 2 is arranged in the drill bit body 1, a rotating shaft 3 is movably connected with the inner bottom of the movable groove 2, the rotating shaft 3 is movably connected with the inner bottom of the movable groove 2 through a bearing seat, a first bevel gear 4 is fixedly connected with the outer surface of the rotating shaft 3, a screw rod 5 is movably connected with the inner side wall of the movable groove 2, a second bevel gear 6 is fixedly connected with one end of the screw rod 5 far away from the inner side wall of the movable groove 2, the first bevel gear 4 is meshed with the second bevel gear 6, a sliding plate 7 is connected with the outer surface of the screw rod 5 in a threaded manner, the sliding plate 7 is matched with the movable groove 2, the sliding plate 7 is in sliding connection with the movable groove 2, scraping drill rods 8 are fixedly connected with one side of the sliding plate 7 far away from the second bevel gear 6, a plurality of scraping drill rods 8 are uniformly distributed on the sliding plate 7, one end of the scraping drill rods 8 far away from the sliding plate 7 extends to the outer side of the drill bit body 1, an extrusion groove 9 is arranged in the rotating shaft 3, the inside of the extrusion groove 9 is movably connected with a limiting plate 10 to prevent the sliding rod 11 from falling off in the extrusion groove 9, the upper surface of the limiting plate 10 is fixedly connected with a sliding rod 11, one end of the sliding rod 11, far away from the limiting plate 10, extends to the upper part of the drill bit body 1 and is fixedly connected with a knob 12 for controlling the sliding rod 11 to rotate, and through the arrangement of the limiting block 14 and the limiting groove 13, the rotating shaft 3 is controlled to drive the first bevel gear 4 to rotate, as the first bevel gear 4 is meshed with the second bevel gear 6, the rotating screw 5 is controlled to rotate, the sliding plate 7 is controlled to drive the scraping drill rod 8 to move while the rotating screw 5 rotates, the scraping drill rod 8 is moved out, so as to change the punching diameter of the drill bit body 1, the outer surface of the knob 12 is provided with antiskid lines, the limiting grooves 13 are arranged on the inside of the rotating shaft 3 and on two sides of the extrusion groove 9, and the limiting block 14 is fixedly connected with the side surface of the limiting plate 10, one side of the limiting block 14, which is far away from the limiting plate 10, extends into the limiting groove 13, the limiting block 14 is matched with the limiting groove 13, and the limiting block 14 is connected with the limiting groove 13 in a sliding manner;

the surface of slide bar 11 is provided with compression spring 17, limiting plate 10 drives slide bar 11 through the elasticity control that utilizes compression spring 17 moves down, thereby control knob 12 moves down, and insert locating lever 15 in locating hole 16, be used for fixing pivot 3, thereby fix lead screw 5, avoid drill bit body 1 to scrape in the in-process that uses and get drilling rod 8 and take place to remove, compression spring 17's one end and limiting plate 10 fixed connection, compression spring 17 keeps away from limiting plate 10's one end and the interior top fixed connection of extrusion groove 9, the lower fixed surface of knob 12 is connected with locating lever 15, locating lever 15 and locating hole 16 looks adaptation, drill bit body 1's inside and the top that is located activity groove 2 have seted up locating hole 16, the quantity of locating hole 16 is provided with a plurality ofly, and annular array distributes in the below of knob 12.

The lower surface of the drill bit body 1 is fixedly connected with a conical drill block 19, the side surface of the drill bit body 1 is fixedly connected with an inclined blade 20, and the upper surface of the drill bit body 1 is fixedly connected with a fixing rod 18 for fixing the drill bit body 1 on a driving device.

The working principle is as follows: when in use, the drill bit body 1 is fixed on the driving device through the fixing rod 18, and then the knob 12 is moved upwards, the positioning rod 15 is pulled out from the positioning hole 16, then the knob 12 controls the slide bar 11 to drive the rotating shaft 3 to rotate, the screw rod 5 is controlled to rotate under the action of the first bevel gear 4 and the second bevel gear 6, the sliding plate 7 is controlled to drive the scraping drill rod 8 to move when the screw rod 5 rotates, and the scraping drill rod 8 is moved out, so that the punching diameter of the drill bit body 1 can be changed conveniently as required, after the adjustment is completed, the knob 12 is loosened, the limiting plate 10 is controlled to drive the sliding rod 11 to move downwards under the action of the compression spring 17, thereby controlling the knob 12 to move downwards and inserting the positioning rod 15 into the positioning hole 16 for fixing the rotating shaft 3, thereby fix lead screw 5, avoid drill bit body 1 to scrape the drilling rod 8 and take place to remove in the in-process of using.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a bored concrete pile drill bit, includes drill bit body (1), its characterized in that: the drill bit comprises a drill bit body (1), wherein a movable groove (2) is formed in the drill bit body (1), a rotating shaft (3) is movably connected to the inner bottom of the movable groove (2), a first bevel gear (4) is fixedly connected to the outer surface of the rotating shaft (3), a lead screw (5) is movably connected to the inner side wall of the movable groove (2), a second bevel gear (6) is fixedly connected to one end, away from the inner side wall of the movable groove (2), of the lead screw (5), a sliding plate (7) is connected to the outer surface of the lead screw (5) in a threaded manner, a scraping drill rod (8) is fixedly connected to one side, away from the second bevel gear (6), of the sliding plate (7), one end, away from the sliding plate (7), of the scraping drill rod (8) extends to the outer side of the drill bit body (1), an extrusion groove (9) is formed in the rotating shaft (3), a limiting plate (10) is movably connected to the inner side of the extrusion groove (9), a sliding plate (11) is fixedly connected to the upper surface of the limiting plate (10), one end, far away from the limiting plate (10), of the sliding rod (11) extends to the upper side of the drill bit body (1) and is fixedly connected with a knob (12), limiting grooves (13) are formed in the rotating shaft (3) and located on two sides of the extrusion groove (9), limiting blocks (14) are fixedly connected to the side surfaces of the limiting plates (10), and one sides, far away from the limiting plates (10), of the limiting blocks (14) extend into the limiting grooves (13);

the surface of slide bar (11) is provided with compression spring (17), the one end and limiting plate (10) fixed connection of compression spring (17), the one end that limiting plate (10) were kept away from in compression spring (17) and the interior top fixed connection of extrusion groove (9), the lower fixed surface of knob (12) is connected with locating lever (15), locating hole (16) have been seted up to the inside of drill bit body (1) and the top that is located activity groove (2).

2. A bored pile drill according to claim 1, wherein: the drill bit comprises a drill bit body (1), and is characterized in that a conical drill block (19) is fixedly connected to the lower surface of the drill bit body (1), an inclined blade (20) is fixedly connected to the side surface of the drill bit body (1), and a fixing rod (18) is fixedly connected to the upper surface of the drill bit body (1).

3. A bored pile drill according to claim 1, wherein: the rotating shaft (3) is movably connected with the inner bottom of the movable groove (2) through a bearing seat, and the first bevel gear (4) is meshed with the second bevel gear (6).

4. A bored pile drill according to claim 1, wherein: the sliding plate (7) is matched with the movable groove (2), and the sliding plate (7) is connected with the movable groove (2) in a sliding mode.

5. A bored pile drill according to claim 1, wherein: the limiting block (14) is matched with the limiting groove (13), and the limiting block (14) is connected with the limiting groove (13) in a sliding mode.

6. A bored pile drill according to claim 1, wherein: the number of the positioning holes (16) is provided with a plurality, and the positioning holes are distributed below the knob (12) in an annular array.

7. A bored pile drill according to claim 1, wherein: the positioning rod (15) is matched with the positioning hole (16), and anti-skid grains are arranged on the outer surface of the knob (12).

8. A bored pile drill according to claim 1, wherein: the scraping drill rods (8) are arranged in a plurality and are uniformly distributed on the sliding plate (7).